Miracle for fuel economy?

[Murray]

Well my first tank's results are in. Unfortunately, I forgot which trip I reset when I filled up and they were close enough to each other that I can't tell which one. That said, worst case, 4oz of acetone got me a 4mpg improvement and a much smoother running engine. Best case is a 6mpg improvement (but I'd bet it's the other one).

Also, I drove a bit harder than usual on that tank, with the windows down and / or ac on, and all city driving. I'm running another tank to see if things keep up but needless to say, I'm pretty happy about getting 24mpg in town.

 

[jrodhotrod]

After a full tank, 18 gallons and 5oz of Acetone I saw zero change in my MPG, again with mostly highway miles it's 24mpg still. I'll give it a go with another tank to see what happens, but so far no change.

I should note that the fuel injectors in this car have been replaced once and since they have been replaced have been cleaned with every oil change using an additive because of clogs on the original injectors.

Results are in from a second tank, and again no change. 24.5 mpg this team, but I am willing to call an improvement of .5 gallons within the margin of error.

Looks like no change on the intrepid, running a tank without to see what happens, but my money is on it being the same again.

 

[wannabe]

That could be true about the ECU... I reset mine regularly (with the fuse)

which fuse do you pull to reset the ecu? i always have just pulled the neg. battery terminal, but pulling a fuse would be much easier (wouldnt have to reset my stereo)

 

[FlyinMSP]

Check your manual, you have 2 choices: either inside the car (fuse box on the driver's side) or in the engine bay (easier). It's the fuse marked as "Engine" in the diagrams. In the fuse box in the engine bay it's a 30 Amp square fuse (pink), it's the last one on the middle row (there are 3 rows from the right) closest to the front of the car (i.e. closest to you when u look into the box)

 

[peepsalot]

Check your manual, you have 2 choices: either inside the car (fuse box on the driver's side) or in the engine bay (easier). It's the fuse marked as "Engine" in the diagrams. In the fuse box in the engine bay it's a 30 Amp square fuse (pink), it's the last one on the middle row (there are 3 rows from the right) closest to the front of the car (i.e. closest to you when u look into the box)

Never tried that method, does it actually keep radio settings? How do you know if it has worked. Does tapping the brakes do the job to drain the juice with this method or is something lelse needed.

 

[FlyinMSP]

Never tried that method, does it actually keep radio settings? How do you know if it has worked. Does tapping the brakes do the job to drain the juice with this method or is something lelse needed.

YES! I don't think you need tapping the brakes, I never did and the car runs a bit different after this (so it works)...

 

[wannabe]

do you just pull it and plug it back in? or do you have to let it sit off like the battery?

 

[FlyinMSP]

Just that but I let it sit a min just to be sure....

 

[Kooldino]

A real way to test this would be for someone with a CEL to do it, and then see if the CEL went away.

 

[FlyinMSP]

Here's my experience:
I had a CEL a while ago (it was the EGT because of a cracked exhaust manifold gasket). The first time I reset the ECU the CEL was still on after (maybe the fuse was not pulled long enough), next day I did it again (hardly driven in between) and the CEL came off. It came back on some days later (prolly b/c I played with the intake), I reset again and it was gone... so it works! My mechanic told me that it comes off after 20 cycles (starts) and back on after another 20 but there's no way that could have been the reason as I hardly drove the car in that period (less than 20 times in all, for sure).
Sometimes when it gets cold and humid or any other abrupt weather change, my car gets a bit "jumpy" especially when I let off the throttle. I've always cured it by resetting the ECU with the fuse and it always runs smooth afterwards.

 

[Rainman]

Here's my experience:
I had a CEL a while ago (it was the EGT because of a cracked exhaust manifold gasket). The first time I reset the ECU the CEL was still on after (maybe the fuse was not pulled long enough), next day I did it again (hardly driven in between) and the CEL came off. It came back on some days later (prolly b/c I played with the intake), I reset again and it was gone... so it works! My mechanic told me that it comes off after 20 cycles (starts) and back on after another 20 but there's no way that could have been the reason as I hardly drove the car in that period (less than 20 times in all, for sure).
Sometimes when it gets cold and humid or any other abrupt weather change, my car gets a bit "jumpy" especially when I let off the throttle. I've always cured it by resetting the ECU with the fuse and it always runs smooth afterwards.

It depends on whether it was a soft CEL or a hard CEL. Some CELs require two faults to light up, others require only one. Depending on what the cause of the CEL was AND whether it is a single-trip vs a double-trip CEL this determines how many engine start cycles are required to: 1. clear the CEL if the problem is fixed, and 2. clear the record of the CEL from the ECUs memory.

R

 

[FlyinMSP]

interesting!

 

[TurfBurn]

So I used some acetone last night to degrease a bunch of bolts... LOL (I really did...) but final results... the Eagle talon gas mileage improvement turned out to be a driver habit change... without acetone he is still getting the same mpg as before... and my Blazer never showed any improvement...

So I'm over and out at this point... good luck!

 

[Jeph]

Same here, i did this tank without acetone, and got 355 miles by the time the gas light came on, so its about the same as the last tank with acetone.

 

[flat_black]

After switching back to straight gas, I'm getting about 38mpg, now, compared to my 41 on acetone for three prior tanks. That's back where I started.

 

[gino]

Geez, Eddie--41 mpg? Thought I was doing well with 31-34 at an average 70 about 90% of the time back and forth to work on the interstate.

Anyway, played the acetone game through four tanks of gas. All on a recent road trip from Denver to Sedona and back at 80. After 1800 miles, about 100 of the 1800 in city traffic, I averaged around 28+, my usual for this trip at that speed and that hiway/town mix.

I still have most of the acetone I bought left--4 ounces per tankful--and may use the rest for a further check. But as a mileage booster, I'm not convinced it works for me.

 

[Turbo MP3]

I'm going to try acetone in my f-150 next fill-up mainly b/c im averaging 13mpg(well better, but i have on 285 tires as opposed to factory 245s) Im probably closer to 15 mpg, but my speedo isn't recalibrated so i cant be sure. If anything I'm sure my fuel system could use a good cleaning as my truck has almost 115,000 miles on it, I should have results next Friday...

 

[FlyinMSP]

The first time I tried acetone I used Esso Supreme for the first 2 tanks and I noticed better mileage. I since then switched back to my usual Shell V-Power (3 tanks ago or so...) and my mileage is not as good as it used to be. I'm gonna finish this tank and go back to Esso and see if anything changes...

 

[MazdaGecko]

and if you does get a better mileage with esso supreme then try next tnak esso supreme without acetone to see if the acetone is the bonus!^^

 

[FlyinMSP]

Yep! That's my plan