Welcome to my fuel measure cars


Contents:

 

INTRODUCTION:
This, I have waited a long time for. A car equipped with an accurate measurement of fuel consumption, carried out to test different types of fuels.

How many times have you heard rumors about this and that that will lead to lower fuel consumption? Different kind of magic formula that you mix with the gasoline or various devices of all kinds, invented by enthusiastic individuals who are often derived ”from over there” and having there heads in the clouds rather than steadily over the trunk.

Must say that I admire people who ignore all conventions and goes its own way - perhaps because I myself am a bit in that direction? One problem is that these desires are not too often lacked the necessary training and therefore easily proceed to invent new laws of nature that is also tailored to provide support for their work. Here, I think they exaggerate there ego in an embarrassing way - you have to be humble. Humans have for centuries (or at least decades) through hard work, exchange experiences, through experiments, the consistent failure - eventually got clarity in how it relates. - Respect!

But how does one really know? It can be difficult to read a fuel gauge. How much of the old fuel was left in the gas tank when I started? Or, how full was the tank? Has anyone given any adequate ground to measurement if you do not top fill the tank? But but... is the improving or deteriorating real enough although this measurement method works also. Otherwise, it probably works just as well with a trip computer.

In a prepared five or ten liters tank in the cockpit related to the vehicle engine we can make direct measurements. You get an immediate reply as to whether this or that entails a consumption gain. This removes some uncertainties that may vary over time (as it takes to empty a full tank of fuel). E.g. weather conditions and driving behavior that can vary depending on when driving in city traffic or on the road. If you have only a few liters to measure you can be e.g. use a specific type of driving and make different comparisons, all on the same day.

This applies to not run out of the extra tank, for example, driving on a highway. In general, such a facility requires that you may pay extra attention and adapt your driving style.

 

 

 

 

up again

 

MEASURE CAR ONE:

Xantia Xantia Xantia


My first car for this kind of experiment was a gasoline-powered car of model year 1995. A two-liter water-cooled straight four with eight valves and manual transmission. No AC or turbo, furthermore, equipped with electronic fuel injection MPFI of conventional type. Apart from the gas-hydraulic system of suspension, including the brake and wheel steering, so I also have the system of water separating from the crankcase (you can read about this above). It lacks air hose from the grill to the air filter; instead there is a 12V computer fan right next to the air filter.

In addition, there is a pulse extension circuit of the type IPE-GS, which allows me to use both gasoline and E85 in what proportions any time and without any derogating from the lambda one. With the help of the IPE-GS, I can also run on pure ethanol or similar alcoholics without the gasoline additive, which I probably will devote myself to do here.

IPE-GS can be equated with the function LTFT (long-term fuel trim) that newer cars are equipped with. In fact, it is only limitations in the software that prevents many cars to be able to adjust for various low-energy fuels and LTFT manages this seemingly automatic - while my IPE-constructions generally are intended for manual adjustment.

I doubt that you would like to perform this kind of samples on a newer car, but when my car is quite old and worn so I think it fits perfectly with this type of experiment. Eventually I will restore the car to its normal state but first a few things must be sorted out...

 

Xantia Xantia Xantia

 

It proved possible to connect the hose from the fuel pump to the engine and return so that you can use a second tank in the car. I thought it would be pretty easy to do this but when the fuel pump is located in the fuel tank and thus can absorb the fuel directly had I to lift up the pump and build a special connection to the suction side. The pressure side demanded nothing extra and remained untouched. The fuel capacity was found to be 2.5 liters per minute - a considerable flow! The pressure is about 2.5 bars and decreases slightly at idle. The green tank/plastic container I have built on, have a level glass. It is easiest to make a mark with a marker pen before and after a rout and then taking the difference - at home or on site. The container is balanced and hangs from the roof coupe. Then the car can tilt without any reading error occurs.

Rebuilding Xantia

Then you should strive for high reliability shall the testing be performed several times. The result should be the average of two or more routs. My experience is that if you drive a distance on a road that may serve as a test and then turns back, which gives two samples. Mostly the fuel consumption differs. That's because the road is leaning but it can also be due to the wind? So either it is uphill, downhill, tailwind or headwind - but the average will equalize this. It is good if you make a reference sample. In this case, unleaded 95 octane gasoline (Swedish type of standard gas that content 5 % ethanol) remain as a reference fuel, since this fuel appeared to be uniform. All year round I thought, but somewhere I became aware that even E5 (95 RON) change over the seasons?

 

 

 

 

up again

 

TEST SERIES 1-1:

Common to all tests:

Normal driving, no hard braking or acceleration.
No load in/on-loaded and that there is only one person (the driver) in the car.
The lambda is always one or near one.
The outdoor temperature is in Celsius. 20 Celsius is 68 Fahrenheit or 293 Kelvin.
15 Celsius is 59 Fahrenheit or 288 Kelvin.
In Sweden we normally use liters per mils (10 km). 1 liter per mil is 23.5 miles per gallon (US).

No. Date Fuel Ingredient Driving-
condition
E.c. (µS/cm) Temp.
outdoor
Samples Test results Average
consumption
Other / remarks
1 2010-06-03 E84 - highroad/sunny 0,5 17 C 2 25.6 ; 27.0 26.1 mpg  Common E85. Motala - Nydalen return.
2 2010-06-04 E87 7% water (dest.) highroad/sunny 0,6 / 0,9 20 C 4 24.0 ; 26.1 & 23.3 ; 26.1 24.8 mpg  0.127 gal water mixed with 2.114 gal E85. The same route: the consumption rose a little bit.
3 2010-06-05 E5 - highroad/sunny - 22 C 2 32.2 ; 34.1 33.1 mpg  Common U95. Route: Motala - Nydalen return.
4 2010-06-05 E5 Acetone highroad/sunny - 22 C 2 34.1 ; 37.9 35.6 mpg  Acetone add. according to the formula: A = E5 x 0,0023 in volume terms! Motala - Nydalen return.
5 2010-06-05 E5 Acetone highroad/sunny - 22 C 2 37.3 ; 38.6 37.9 mpg  This was a fairly straight roads with maximum speed limit of 80 km/h (Motala - Vadstena return).
6 2010-06-05 E5 Acetone highroad/sunny - 21 C 2 34.1 ; 36.8 35.1 mpg  Repetition of sample no. 4 (Motala - Nydalen).
7 2010-06-05 E5 Acetone highroad/sunny - 20 C 1 30.2 30.2 mpg  Had to get rid of the old fuel so I doubled the amount of acetone, just to get a hint.
8 2010-06-05 E5 (small traces of acetone) highroad/sunny - 18 C 2 34.1 ; 34.1 34.1 mpg  Motala - Nydalen again. Fuel consumption rose slightly after the acetone was removed.
9 2010-06-06 E5 - highroad/sunny - 19 C 2 35.6 ; 37.9 36.8 mpg  The route Motala - Vadstena return, without acetone.

For this test series, one can draw some interesting conclusions. Apparently you can mix 7% water in E85 without any separation occurs.

I used distilled water and of course it is more expensive than ordinary tap water. I must admit that it felt a bit odd to pour in half a liter of water in my newly bought E85 (8 liters). The disadvantage of water in E85 should well be that the danger of increased corrosion of the fuel components such as pipes and injectors, etc. The conclusion is that if a reducing of the fuel is done by water, then appears this seven per cent also to increase the fuel consumption by five per cent (it was a bit more petrol in the sample with water) . The profits are plus minus zero and the efficiency will not rise. After this test, it seems that E85 plus seven per cent of water as a less high-grade fuel than E85 without water.

Another conclusion is that consumption difference with the E85 vs. E5 is 27% - in quantity seen. My car, therefore, consumes 27% more fuel when I run on E85 than when I run the E5 (which is the car's standard fuel). Put it in relation to the pulse duration is 40% larger! The answer for why the consumption not is 40% larger, is due to the fact that the engine develops more power. The power increase reduced the fuel consumption.

In comparison with the Mythbusters, so had I a reduction in fuel consumption with acetone! Subsequent measurements with more accurate methods have also shown that acetone provides a smaller gain for the consumption than this result shows. The profit is so small that it hardly can be measured - perhaps it is so that it is better on highways, as this show about 6%? The question remains open until further notice. Small doses of acetone in gasoline and glycol in ethanol - apart from a negligible effect on fuel consumption - have the ability to reduce the need for fuel, i.e. opening time of fuel injectors.

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Samples Test results Average
consumption
Other / remarks
10 2010-06-06 E84 Acetone highroad/sunny 0,2 22 C 2 27.4 ; 28.0 27.7 mpg  E85 laced with acetone according to the formula:
A = E85 x 0.0023. Motala - Nydalen return.
11 2010-06-07 E85 Acetone highroad/rain 0,4 13 C 2 28.3 ; 23.1 25.3 mpg  E85 laced with acetone according to the formula:
A = E85 x 0.0023. Motala - Vadstena return.
12 2010-06-07 E87 Acetone highroad/cloudy 0,5 11 C 2 24.0 ; 27.0 25.3 mpg  E85 laced with acetone according to the formula:
A = E85 x 0.0023. Motala - Nydalen return.

These attempts (10-12), did I not know that acetone shall be dosed with regard to gasoline content of E85. Why the sample 10 indicates that low consumption is somewhat unusual.

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Samples Test results Average
consumption
Other / remarks
13 2010-06-08 E87 Toluene highroad/sun/rain 0,6 15 C 2 27.4 ; 27.4 27.4 mpg  E85 laced with toluene according to the formula:
A = E85 x 0.0023. Motala - Vadstena return.
14 2010-06-09 E86 Toluene highroad/cloudy 0,6 18 C 2 24.0 ; 24.8 24.2 mpg  E85 laced with toluene according to the formula:
A = E85 x 0.0023. Motala - Nydalen return.

Toluene (methyl benzene) is closely related to benzene - a cyclic/aromatic hydrocarbon. It is used in adhesives and in the manufacture of TNT. Toluene is a typical petroleum products and the largest component of gasoline (10-15%). Therefore it must be in sufficient quantities even in the E85. Toluene in small doses has no effect on fuel consumption. For sample 13 began the dose of the previously added acetone get in the right concentration. We therefore need a very small amount of acetone for E85 which is quite remarkable.

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Samples Test results Average
consumption
Other / remarks
15 2010-06-09 E87 Acetone highroad/drizzle 0,4 18 C 2 28.3 ; 25.6 26.7 mpg  E85 laced with acetone according to the formula:
A = E85 x 0.00035. Motala - Vadstena T&R.

The sample 15 apparently confirmed that acetone in E85 has an affect on the fuel consumption: Acetone = 0.00035 x E85 (0.00035 is the result of 0.15 x 0.0023).

Subsequent samples were performed with glycol. Glycol has been shown to impact on E85 in a favorable way. The fuel consumption does not change but the fuel injector's opening time can be reduced, also the will to draw increases. For a car equipped with a trip computer, such a reduction of the car's timing indicates that it saves fuel, but this is not the case. The reduction of the consumption is not synonymous with the fuel-spreader opening time, when the fuel composition is changing in this way. Glycol in the E85 also increases its conductivity.

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Samples Test results Average
consumption
Other / remarks
16 2010-06-10 E88 Acetone + Glycol highroad/cloudy 30 18 C 2 26.7 ; 26.7 26.7 mpg  E85 laced with Acetone = E85 x 0.00035 and Glycol = E85 x 0.005. Motala - Vadstena return.

 

TEST SERIES 1-2:

I have now decided to run the measurement distance in urban environment, mixed with highroad driving (Citroen Xantia). My view is that it becomes more accurate figures if the car has to work over a wider range with several hills, starting and stopping. I'm running now with Teflon in the engine oil and have higher pressure in the tires. The spark plugs are little older than average.

Those who think that I unconsciously run smoother in some samples, and vice versa in the other samples - can probably dismiss this. First, I strive to have the same driving style for all the samples - which I am aware of. Second, the time it takes to run the distance (I'm using a stopwatch), shows that it is only differ plus or minus ten or twenty seconds between the samples. In some cases it may be a problem if I not can get past a slow car and it happened one time. In that situation could I eventually get past it - but I deleted it. In general, it is difficult to cause differences in driving style, because you have to change the way to drive in an unimpeachable manner, if it shall be prove in the consumption figures. This was confirmed when I drove the route three times with the same fuel and then I got three application rates, that were all exactly the same!

Motala (the distance is 12.8 miles):

Motala

 

MEASUREMENTS RESULTS:

Common to all tests:

Normal driving, no hard braking or acceleration.
No load in/on-loaded and that there is only one person (the driver) in the car.
The lambda is always one or near one.
The outdoor temperature is in Celsius. 20 Celsius is 68 Fahrenheit or 293 Kelvin.
15 Celsius is 59 Fahrenheit or 288 Kelvin.
In Sweden we normally use liters per mils (10 km). 1 liter per mil is 23.5 miles per gallon (US).

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Added pulse Consumption Gain Other / remarks
18 2010-08-02 E5 (95RON) - partly cloudy / 1010 - 17 C 0% 29.4 mpg 0%  Common 95 RON (E5) which is the car's standard fuel. IPE-GS was unplugged - no pulse digression.
19 2010-08-03 V-POWER - clear / 1000 - 16 C -8% 30.5 mpg +3,8%  Shells V-power. IPE-GS unplugged but indicate more energy-rich fuel then E5.
20 2010-08-04 E5 A9g+ party cloudy / 1000 - 17 C -8% 30.5 mpg +3,8%  E5 with A9g+ (+ = the glycol is laced with hexamine). IPE-GS unplugged but indicate more energy-rich fuel then pure E5.
21 2010-08-04 E5 & E85 A9g+ & G14a+ cloudy / 1000 3 16 C +2,7% 27.0 mpg -8,8%  50% E5 & 50% E85(St1). IPE-GS plugged in.
22 2010-08-04 E5 & E85 A9g+ & G14a+ clear / 1000 5 15 C +7,5% 25.6 mpg -15%  33% E5 & 66% E85(St1). IPE-GS plugged in.
23 2010-08-08 E88 - drizzle / 1000 0,3 18 C +33,3% 23.3 mpg -26%  Pure E85 (without any additives by me) bought in OKQ8. IPE-GS plugged in.
24 2010-08-09 E45 - cloudy / 1000 - 16 C +11,8% 27.0 mpg -8,8%  Equal parts E5 & E85(OKQ8). Pure fuels - no additives! IPE-GS plugged in.
25 2010-08-09 E45 G3a+ cloudy / 1000 4 16 C +2,7% 27.0 mpg -8,8%  Equal parts E5 & E85(OKQ8) - identical to 21 besides G3a+ IPE-GS unplugged.
26 2010-08-18 E88 - clear / 1015 0,4 18 C +33,3% 23.8 mpg -24%  Pure E85 (without any additives by me) bought in OKQ8. IPE-GS plugged in.
27 2010-08-22 E88 G15a+ clear / 1000 40 16 C +20,4% 23.3 mpg -26%  E85 with the special additive G15a+ IPE-GS plugged in.

 

In this new series of tests we need to acquaint ourselves with various additives - if we do not already know them? Facts about the additives and what they contain are only available for a few of them*. A9g+ is an additive specifically designed for unleaded 95 octane gasoline, because this is a type of fuel that containing ethanol and therefore should it be glycol in the addition - not only acetone.

G3a+ is a new additive which is carefully designed in order to be able to run 50/50, i.e. equal parts petrol/E85. The point is that you do not need to take any action with the car, but still enjoy the benefits of ethanol in terms of price and environmental emissions. G3a+ does not appear to reduce the fuel consumption in the least, but it reduces the need for an extra injector opening time pretty sharp! I can guarantee that there is a difference between driving with G3a+ than without. With G3a+ runs the car, as if it was normal petrol - it is certainly my view.

Some interesting aspects should be highlighted. In the sample with V-POWER, I could see that my IPE-GS unit indicated an more energy-rich fuel, because the engine run fat, without any extra pulse/opening time were added. This is not true, because the ECU could reduce the opening time. But that means that the engine needs less fuel (at idle) to achieve normal operating status. Furthermore, it should lead to the engine uses less gasoline and it was exactly what happened - the car consumed less with V-POWER than with regular unleaded 95 (which is the car's standard fuel). Further show sample 20 that it works just as good to add A9g into E5 and in performance compare with V-POWER. So with A9g can even you feel the horses running at the beach :) (Should be added that) these reductions in fuel consumption are quite moderate and are adjacent to the error tolerances. Only two oz differed between the sample 18 and 20!

In august 2010 commanded not to some sensational atmospheric pressure variations, either, for it was for the most part low-pressure and during these cycles was the weather situation in the Motala area, relatively stable.

Additives with a plus sign are using G+, instead of ordinary ethylene glycol. G+ has been shown to reduce the opening time further. G15a+ is a somewhat extreme variant, which not turned out to be better. G15a+ does not contain 15 parts glycol and 1 part acetone! The ratio 15/1 however, is quite a sensible combination. G14a is the oldest additive which were replaced by G16a and later G19a, but now is G14a back again! It has been shown that the best combination of these three variants is G14a.

 

* = Nowadays is G3a and A9g obsolete additives and thus replaced with UGA and A40/A8g.

 

 

 

 

up again

 

CONCLUSIONS, FORMULAE & DIAGRAM:
My experiments have shown that a small dose of acetone in gasoline provides an immediate efficiency for gasoline engines. The effect increases and the fuel consumption decreases. The efficiency is of the same grade for cars that run on E85 - if the dosage of acetone is done after the gasoline content.

My discoveries is originally originated from Internet e.g. this site. There is a chart which I translated for Swedish readers (below). A Swedish source about glycol whose task is to work as an ignition improver in ED95.

 

Acetone

The graph shows an average of three cars that were included in this evaluation, but only one diesel car. The improvement probably relates to the increased mileage per gallon and can apparently exceed up to 35% - it sounds promising but is almost certainly a misunderstanding. Here have probably someone downloaded the information from a trip computer? A trip computer measures the opening time of fuel injectors and it decline pretty much with acetone, according to the dosage above. Based for my own studies is the actual fuel consumption gain only 4-6% - not 35%!

The x-axis is initially calibrated in ounces (oz) 1, 2, 3, 4, 5 and 6 - in which one ounce is 29.57 ml in units per 10 gallons - where a gal is 3.758 liters. If you pour in too much acetone, the curve crosses the zero line and the car draws more fuel than before - because acetone produces less energy than gasoline does and also decreases the octane number. In addition, the fuel components will not function well with a high content of acetone in the fuel. My own experience is that it is better to take less than too much acetone.

Further studies shown; that a small part ethylene glycol has a power enhancing effect for engines that run with E85 and is equipped with electronic fuel injection. G14a called a mixture of ethylene glycol and acetone that I've chosen to call it. It consists of 14 parts ethylene glycol and depending on whether it is summer or winter are there one or one and a half part of acetone.

G14a dosed in volume of the formula: G14a (in dl) = E85 (in liters) x 0.05

Ethylene glycol mixed with E85 increases the conductivity.

 

FORMULAE:
(volume)

Gasoline   Acetone = Gasoline x 0.0018
E75   Acetone = E75 x 0.00045
E85   Acetone = E85 x 0.00027
E90   Acetone = E90 x 0.00018

After detailed investigations, the dose of acetone has to be adjusted slightly downwards.

 

E85   Glycol = E85 x 0.005

 

G14a (s)   G14a = Glycol x 14 + Acetone x 1
G14a (w)   G14a = Glycol x 14 + Acetone x 1.5
E85   G14a = E85 x 0.005

 

 

 

This chart shows the minimum required opening time of E85 and other mixed fuels. It was through my IPE-GS unit that I was able to establish this.

The percentage increase is in other words valid for my car, but it should probably also be true for most other standard cars - at the whole? The interesting thing is that there is a dip at E55 indicating that E55 is preferable if one wants to have minimal impact, i.e. a high E-quality while maintaining a short opening time.

Open time

 

 

A guide for fuel mixing people which helps when it's time to fill up:

H=7 cm & W=6 cm

 

 

 

 

 

 

 

 

 

 

Instructions for the methodology when refueling LFG-fuels:

methodih

 

Formula to adjust AG+ (E?? is less or equal to 85)

Amount acetone = (85 - E??) x 0.0035 x amount AG+

 

AG+ should be dosed accurately while AG++ can be overdosed. The effect of AG++ decreases slowly but can be renewed with a lower dose if the vehicle has been stationary for a long time. Beyond AG++, one can also boost the with the cheaper and glycol-free additive SH +. The method one should use may differ depending on the circumstances.

 

Example: 40 liters of mixed fuel E68 will be refueled in a car. The available fuels are E85 of winter quality, i.e. 75% ethanol (25% gasoline), and V-Power with 5% ethanol content...

According to the program for calculation of mixed fuels gets: amount E85 = 90%, which is 0.9 x 40 = 36 liters, and amount V-Power = 10%, which is 0.1 x 40 = 4 liters. Then, start to fill up 36 liters of E85 and then 4 liters V-Power. Drive away about a mile and park the car. Dose 200ml AG+ (which is adjusted to E68*) and dosing thereafter AT2 promptly. Since V-Power was a part of the refueling one should use AT2 without V-Power (only T66 and acetone) - which then shall be dosed with 1%! Dose then 400 ml AT2. Now let it react for at least 15 minutes before the car is used. Do NOT wash down the additives with - for example: methylated spirits or E85.

* Lets say that you own 500 ml crude AG+ which will be adjusted from 85 to 68 - then shall 30 ml acetone be added

 

 

 

 

 

up again

 

MEASURE CAR TWO:

Peugeot 407 Peugeot 407 Peugeot 407

If you add 11 years to ”measure car one”, you will get measure car two - an ordinary station wagon of the brand Peugeot 407 SW from 2006. It is quite a significant modification in comparison with a 95th Xantia, if one ignoring the gas hydraulic brake, suspension and steering wheel system. Brake and the steering servo are however two separate systems in the Peugeot. There are also AC, cruise control, a lot of electronic features and electronic fuel injection of sequential type SFI (i.e. no direct injection), plus two lambda probes - one before and one after the cat. Thus, a turbo loose petrol powered two liter water cooled eight valve engine, still with a manual box.

Since much has happened from an electronic point of view between 1995 and 2006, no external pulse extender is required (if one fills the tank with a low-energy fuel). Adaptation takes place quickly when switching directly from gasoline to E85 or vice versa. One can claim that the car already is ethanol-adapted, even though it is designed to be powered by gasoline.

The car's ECU is very sensitive to external impact. I connected an IPE-GS with three SQ modules for each cylinder and it worked perfectly. After a while however, the computer says: stop, something is wrong! The error message: Depollution System Faulty turned out. The ECU detects that something else draws the injectors to earth potential, and this also results in an error code. A traditional pulse extender must first be masked before it can be used. One can not even solder a free hanging cord connected to the first lambda probe without ”depollution system faulty” appearing. Thinking it will be difficult to connect an LMD in the future (if at all it does any good). With pure E85 in the tank is the engine extremely hard to start when it's cold and it does not matter what temperature it is outdoors. I tried with a modified CSD and it works fine. How this CSD behaves when the winter is nearing remains to be seen. A CSD is all that is needed and the only one of my circuits that should be used for a Peugeot 407 - then you knows.

As electronics constantly getting smaller and smaller, it becomes harder and harder to make modifications of this kind. Just solder pins from all injectors to IPE-GS and SQM was a real fiddle job - on the other hand, the board seemed even more durable and robust than before.

If one choose to drive with E85 for an extended period of time should nothing special happens more than the oil gets polluted by water? I have not changed fuel filters but maybe I should - now when I suddenly starting driving with E85 - now when the miles approaching 87,000? Unless the price of E85 drops, I do not see any reason to continue with E85 but then I choose E40 instead, which I think is pretty good considering the soothing properties of gasoline. Likewise, the deposit from gasoline is also nice to get ride of. Any profit or loss can not be determined regardless of the gasoline/E85 blend ratio, it will be the same cost anyway - I've checked! At least, that is the case with the prevailing fuel prices 2017... Water separation and turbo charging with a computer fan may be a later project?

 

Peugeot 407 Peugeot 407 Peugeot 407

 

This time, I chose to build a significantly better construction that is located in the rear seat quite close to the normal fuel pump's residence. Here we talk about a permanently mounted external tank (ET) with its own fuel pump (purchased on the scrap yard) which is of course, identical to the regular pump which remains completely inoperative during the measurement periods. An extra extension hose from the regular pump to ET is required as well as extension cables to the electrical connections. ET consists of a 10 liter (2.64 gal) carved fuel can (same as it next to it) and an aluminum plate to hold the pump in place. The entire tank unit rests on three spring loaded suspension points on a black lacquered wood structure. ET is therefore adjustable in the horizontal plane with three wing nuts.

Before and after a reading of the amount of fuel one must first check the position of ET using the water pass. If one forgets that - one will get a rough error reading. This has not happened so far even though the picture shows that the tank unit is wrong-weighted at the time of the photo. The red belt is a safety feature to avoid being hit by this device (filled with fuel) in case of a crash. Everything is a unit that easily can be mounted/disassembled when the need calls? Since the fuel system of the car not has any return line, one must bleed the fuel lines (it's done at the engine) every time a shift with or without ET occurs.

The system is constantly vented so that no pressure increase can occur in the external tank. The silicone seal between the plastic and the aluminum can not withstand any overpressure. Silicone adhesive is by far the only sealant that works in this environment. The ventilation goes to a carbon filter, a Vitamin Well bottle filled with activated charcoal (no bad odor releases). Someone may wonder if I can read the fuel meter on the instrument panel? It is indeed connected but is completely unreliable. The pointer is mostly located in the middle of the scale, but gives a little hint about what is present in ET. In fact, one can completely empty ET with the siphon principle and then refill with another fuel without to having bleed the fuel system, it's smooth.

The left image gives the impression of a clean and stylish environment. During test runs however, the situation is quite different: on the floor there is usually a lot of cans, bottles and hoses in a blissful mess. The pictures were taken in March 2007 but later the green screw cap was replaced with a rubber stopper for chemical bottles. Quite a lot of hours have been completed until this writing (June 2017) without anything else in the design has changed. On the front one can see holes for three bottles of different dimensions and a hole for a graduated cylinder.

Rebuilding Peugeot 407

Of course should all fuel consumption measurements be done in the same way: same route, same equipment except the fuel, as understood. When something is to be register and published later, a proper test must be done in the same manner as all other tests were made, as far as possible.

However, to getting a hum if anything means a difference in fuel consumption, can one do a fast test. This means that one aimlessly driving around with an ET. At any arbitrary starting point takes the fuel level and resets the distance meter - then one drive to some ending point. Then the amount of fuel can be estimated and the consumption can be calculated by the information of the cars distance meter.

It is impossible to dash in the correct temperature, atmospheric air pressure, winds or other weather/season controlled parameters every time, but what can be controlled should be controlled, likes the car's weight and tire pressure, as well as avoid changes (change of oil, filter, spark plugs etc). It is not that smart for example to switch to a new air filter during an ongoing measurement period. A change from winter tires to summer tires was made in March but no major impact could be found. Tire pressure, temperature, wind, high pressure / low pressure, oil wear, etc - consider someone out there - having a meaning - if my measurement results shall have a value - but then it should be remembered that there is no point in specifying the fuel consumption for any vehicle if that were the case. For example, I do not drive with a cold engine or if it is blowing or raining. My own experience says that the aforementioned variations not are significant, but outside temperature, atmospheric pressure prevailing weather conditions are still recorded for those who are curious.

 

 

 

 

up again

 

TEST SERIES 2-1:

Now in 2017, it's time to make new measurements with another car model - a Peugeot 407 SW. The point of driving in city traffic has lost its significance, as I now think it is sufficient for highway driving because: if there are differences in fuel type - it will be most apparent then. Driving in city traffic is uncertain, where a number of situations can lead to difficult-to-understand results.

Motala - Fornåsa and return (the distance is 17.4 miles):

Motala-Fornåsa

 

MEASUREMENTS RESULTS:

Common to all tests:

Normal driving, no hard braking or acceleration.
No load in/on-loaded and that there is only one person (the driver) in the car.
The lambda is always one or near one.
The outdoor temperature is in Celsius. 20 Celsius is 68 Fahrenheit or 293 Kelvin.
15 Celsius is 59 Fahrenheit or 288 Kelvin.
In Sweden we normally use liters per mils (10 km). 1 liter per mil is 23.5 miles per gallon (US).

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Average-
consumption
Gain Other / remarks
28 170310-170318 E5 (95RON) FeTA clear / 1020 - 4 C 36.2 mpg 0%  The temperature ranged between -3 and 8 C. It was high pressure weather all the time. Both winter and summer tires were used.

The first run for several years is an average of total eight runs with FeTA, which shows that this type of fuel additive for plain lead free 95 (RON) does not affect the fuel consumption at all. When I had estimated that FeTA reduced fuel consumption in the past 2015-16, I used the instrument panel fuel meter and filled 10 liters in a round. It went well because my fuel indicator is of the accurate variety. The mistake I made was not to measuring what untouched gasoline had for figures first, before the measurements with the FeTA additives commenced. My memory tells me I did not. That the petrol out in trade suddenly got better between the runs I did 2015-16 and those with the measure car in March 2017 are less likely. Then it becomes a problem when one rarely has an absolute additive but rather a mixture of several. With a measuring car is that problem out of the world.

 

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Average-
consumption
Gain Other / remarks
29 2017-05-12 E5 - clear / 1010 - 8 C 36.2 mpg 0%  Several hundred miles were driven with plain lead-free 95 (RON) before these measurements were taken. Summer tires were used.

A total of two measurements were made the same day showing that the fuel to which the car is to be operated (according to the instructions) also leading to consumption figures that is hard to beat.

 

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Consumption Gain Other / remarks
30 2017-05-19 E85 (St1) - party cloudy / 1010 1,2 24 C 27.4 mpg 0%  This particular E85 apparently had quite high conductivity.
31 2017-05-19 E85 (CK) - party cloudy / 1010 0,2 20 C 28.0 mpg +2,3%  Circle K also supplies the petrol product miles Plus 98, which is very well comparable to V-Power.
32 2017-06-06 E37 60% BF95 & 40% E85 party cloudy / 1000 - 14 C 33.1 mpg -9,2%  Fuel mixing can be done as well. Typical data for two existing fuel products.

The first E85 test from St1 can be seen as a good target value for later tests. Consequently, the consumption of ordinary E85 is 32% greater than the vehicle's correct fuel. With E85 from Circle K, consumption decreases slightly (giving a 29% increase instead) because the ethanol contains anti-friction inhibitors.

My additive T66 seems to have the same effect on cheap ethanol as Circle K has on the consumption with theirs own ethanol. See results for sample 37!

Sample 32 shows that the consumption of E37 is as expected, either Bu or bee.

 

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Consumption Gain Other / remarks
33 2017-06-08 E85 (own) - party cloudy / 1000 3 16 C 23.5 mpg -16,3%  Self-made E85 by Carwise Red Ethanol and Biltema Alkylatbensin 4-T, as I drove in the car properly before the samples started.

If you do not want to use E85 from the gas station you can do it yourself. The tours around today's E85 and NAMAG were previously discussed in the The News Bulletin. What I'm looking for here or want to be confirmed is to see if NAMAG has any effect on E85, as I said earlier. The suspicions had been directed at the oil companies, which I considered spiced E85 with IBA, which meant that my acetone and glycol additives no longer worked. When I heard of FoHMFS in the summer of 2015, it came to my attention that my mind was correct. In 2011, the new regulations introduced that 0.5% IBA should be dosed in all E85. If now this is the answer to why the effects of many of my additives suddenly ended can I not prove but something has to happen and since no reasonable explanation is yet available, that's the 2011 rules that apply until further notice.

Now it's not as easy as I seem to implying: that all E85 is bad, but one can instead see it as: today's E85 has everything one need to get it work optimally - if one ignore a splash of T66...

Sample 33 reveals that the consumption was abnormally high for this home-made variant - why I do not know. But in comparison with gasoline it is a 54% increase in consumption! Had the consumption of gasoline been around 30.9 so would it be normal with a decrease of 23.5 miles per gallon for pure E85 - but that's not the case. What's a bit awkward is that with NAMAG my home-made E85 was transformed into something more similar to normal E85, which the next test showing.

 

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Consumption Gain Other / remarks
34 2017-06-08 E85 (own) NAMAG clear / 1000 13 12 C 26.7 mpg -2,3%  Home-made E85 and NAMAG show positive effects.
35 2017-06-10 E85 (St1) NAMAG party cloudy / 1010 - 18 C 27.4 mpg 0%  Apparently, I forgot to measure the conductivity of this test.
36 2017-06-12 E85 (Preem) NAMAG shower of rain / 990 11 13 C 26.7 mpg -2,3%  E85 from Preem makes no difference. NAMAG does not work here either.

This confirms that NAMAG has positive effects on (home-made) E85

If that was what happened when I driving around with my Citroën Xantia in 2013 - filled 10 liters and drove until the fuel ran empty of the tank - that I can not say but the easiest explanation is, that there will be some impact with NAMAG but not so big like what happened in 2013. The fact that I drive such far during a test cycle in the autumn of 2013 was certainly due to: it was fuel left (hidden in pockets) from previous fillings. Three times I got incredibly low consumption figures, which not has been replicated later.

26.7 according to test 34 applies if one not refers the real fuel volume, where the ethanol part occupies 96% of the methylated spirit and the rest is water. If one do that, thus counting off the water from the total volume of ethanol, alkylate petrol and water consumed during the test run, so then one get a lower consumption figure. This is 27.7 which means a profit (+1.2%).

The yield from 23.5 mpg up to 26.7 mpg is +13.6%, which is not bad at all - only with a fuel additive. NAMAG is quite complicated additives that to be dosed 2.5%. Most likely, there are already simpler and cheaper methods to accomplish what I have accomplished here.

 

 

No. Date Fuel Ingredient Driver-
condition
E.c. (µS/cm) Temp.
outdoor
Consumption Gain Other / remarks
37 2017-06-12 E85 (St1) T66 party cloudy / 990 3 15 C 28.0 mpg +2,3%  If this is true, only a little T66 is required for boosting E85? Small remains of NAMAG were left in ET when this test was done!

Lighter fluid purchased from Rusta and little stored city diesel was used to blend an old honorable T66, which seems to affect today's highly efficient commercial fuels...

 

 

 

 

up again

 

Test of viscosity:
As it has been criticism about this with acetone and glycol as power-enhancing ingredients in gasoline and E85, I had to do a new survey. What has emerged is that the reduction in opening time depends on the viscosity of the fuel has fallen, not to fuel emits more energy due to surface tension reduction or that the spread of the fuel becomes more efficient. This explanation was of such great materiality that sooner or later should someone examine whether the viscosity become smaller under the influence of acetone or glycol. Reduces the viscosity can the fuel injectors inject the same amount of fuel but with shorter opening time and that is precisely what is happening here. The opening time is shorter than if you drive without acetone or glycol - as I self have been able to see.

I chose to use two pet bottles during the experiment and the whole thing looked like an hourglass, so it may be known as the hourglass-method here. One pet bottle has a narrow hose stump that is secured through a hole in the screw cap. This hose stump shall the fuel run through and clock it with a stopwatch. In this pet bottle other end (the bottom) is an air hole (7 mm). The time it takes for a full bottle to be empty, is close to 10 minutes. I therefore need to hold the bottle still for about ten minutes. In total were 15 draining, spread over five different samples with three tests for each sample. Imagine for example that we would have syrup in the bottle - then it would take a very long time. Thus - the shorter time it is, the lower is viscosity.

Viscosity       Viscosity       Viscosity

Only E85 E85 with acetone
by the formula:
A = E85 x 0,00035
E85 with glycol
by the formula:
A = E85 x 0,005
E85 with acetone
by the formula:
A = E85 x 0,0023
E85 with G14a
9:30 minutes 9:46 minutes 9:52 minutes 9:35 minutes 9:42 minutes
9:33 minutes 9:40 minutes 9:41 minutes 9:39 minutes 9:40 minutes
9:33 minutes 9:43 minutes 9:39 minutes 9:54 minutes 9:44 minutes

This test series shows that pure E85 have the lowest viscosity in comparison with all other variants, which has higher viscosity. The conclusion is then that there is no change in viscosity who thus resulting in a smaller opening time. However, as this test has not taken account of elder batches and viscosity changes when the liquid is pressurized for one or more bar.

 

As if this were not enough, I have also heard a rumor that the viscosity of E85 varies widely with temperature. This is something that I myself did not believe in, because my feeling says that alcohol like water have a relatively constant viscosity, but to be on the safe side so prepared a further series of tests, which hopefully will give some light about the issue of E85 and its viscosity at different temperatures. The temperature was measured at three different times for each test.

no. Type Average temperature
[Fahrenheit]
Time
1 room temp. 72 7:18 minutes
2 room temp. 72 7:22 minutes
3 heat 126 7:25 minutes
4 heat 131 7:36 minutes
5 cooling 50 7:53 minutes
6 cooling 45 8:34 minutes
7 cooling 37 8:30 minutes
8 room temp. 72 8:09 minutes
9 heat 109 7:56 minutes

 

Viscosity The picture shows an emptying of cold-E85. The markings for the timing is clearly visible.

Here appears my assumption to be correct and the tests did not show any kind of continuity - rather it jumping all time in a completely non-predetermined manner. The shortest time was no. 1 (72 degrees) and the maximum no. 6 (45 degrees). However, there are suggestions that the viscosity decreases slightly when it gets colder, but it is very marginal.

 

 

 

 

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