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i just read that using 2 oz. of pure acetone per every 10 gallons of fuel helps improve gas mileage have u guys ever tried it? I think ima try it next time i fill up and see if it works. acetone is supposed to help increase the combustion of regular fuel so thats means no more wasted unused fuel that drips from the tailpipe. heres a link to the website i found the imformation on and for the youtube video.
YouTube - Double Your Gas Mileage! 2X
Acetone In Fuel Said to Increase Mileage
 

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it defies the laws of the combustion engine. the motor's not gonna stop pumping fuel if there's fuel in the tail pipe. besdies, running lean will damage your engine. you want to run nice and rich so it's safe. screw gas mileage, don't you want that crackly pop out the exhaust?
 

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if you wanna make use of the fuel in the tail pipe. rig up a spark plug back there with a coil and light that baby up!!

---------- Post added at 11:22 PM ---------- Previous post was at 11:19 PM ----------



---------- Post added at 11:23 PM ---------- Previous post was at 11:22 PM ----------

but seriously I have a feeling putting that stuff through your motor is a bad idea
 

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I have read a lot about this over the last couple of years, and nothing has ever convinced me to actually use it in a modern engine. I tried it a couple of times in my old Geo, and saw no gains.
 

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Besides, I don't think there's a lot of "raw" fuel being dumped out of the exhaust pipe. If it runs THAT rich, you better get it looked at. The cat. converter takes care of the tiny amount of raw fuel anyway.
 

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i wouldnt do it... anything that promises to double your gas mileage is crap. Your gonna see much better gains by just improving driver habits. besides, modern engines are already so efficient there really isnt any unused fuel being dumped from the exhaust (and the little that there is, if it was burnt you wouldnt notice the difference)... It just sounds like it could do a lot more damage to your engine than its worth
 

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If it really worked, everyone would be doing it.

If you want better fuel mileage, get a tune. A good tune will make the AFR stoichometric instead of the rich running one GM uses.
 

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If it really worked, everyone would be doing it.

If you want better fuel mileage, get a tune. A good tune will make the AFR stoichometric instead of the rich running one GM uses.
if it really worked gas companies would be putting it in the gas. and wouldnt tuning your car to run lean do damage to your engine?
 

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if it really worked gas companies would be putting it in the gas. and wouldnt tuning your car to run lean do damage to your engine?
If you set your AFR to lean, then yes... But a proper tune should put the AFR to where it is a stoichometric mix. Not lean, but not rich. GM's stock tunes and even most of their stage tunes run on the rich side.
 

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yea i know that manufacturers always use a rich tune to help keep the engine running properly, but i would think a tune would cost more money than you would save in gas... although it would probably give you a little more power as well
 

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yea i know that manufacturers always use a rich tune to help keep the engine running properly, but i would think a tune would cost more money than you would save in gas... although it would probably give you a little more power as well
You act like a tune for the Cobalt costs a ton of money. Trifecta is $250 for every Cobalt except the LNF, which is 350. Anyways, the tune does increase power, especially on the LSJ and LNF. There are HP Tuned LNF's running around on the stock sensors that outdo ones with the GM Stage 1 upgrade.
 

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ive never had a car tuned so i really don't know how much they cost... i know my cousin had his wrx tuned and it was like $500 or something like that

either way i think i will stick to my rich tune... one bad tank of gas with an optimal tune and your engine goes bye bye
 
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