Acetone as a Gasoline Additive

2 ozs. of Acetone to 10 gallons or more of gasoline or diesel gives you better fuel mileage and more horsepower. Acetone can be found in the paint department of most stores. (Can be used ONLY with Premium fuel.)


By Terri from NV

Editor's Note: This is a fairly common tip so we wanted to publish it but a reader quickly pointed out that the folks at Car Talk strongly recommend NOT doing this and provide numerous potential hazards to consider. Before considering adding acetone as a fuel additive be sure to read the link below:

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February 1, 20060 found this helpful

You need to read this column by the guys on NPR who host the Cartalk show. The car you save may be your own.


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By Robert (Guest Post)
August 14, 20060 found this helpful

I guess I must be on crack when I calculate my 25-plus percent increase in mileage with acetone. Then, if I ever am unable to add my acetone and my mileage drops 25%, I guess I'm off crack.


Read the CarTalk article. Big surprise that a representative of an *oil company* said that acetone doesn't work. As we all know, big oil has fuel efficiency and our best interests at heart. Don't believe me? See the new documentary, "Who Killed the Electric Car?" The EV1 was getting the equivalent of 300 miles a gallon (a hundred miles on $3 worth of electricity = a fillup for $10 ... what are YOU paying to fill up?) GM made the EV1 so that they could get a legal loophole to begin producing the Hummer -- which started the whole SUV craze. As soon as they had their loophole in place, they KILLED the EV1 even though people were lined up to get it. Ever wonder why you never see an EV1? Because GM REPOSSESSED every single one from every single owner. They then took them out to the desert, piled them up, and CRUSHED them. See


People, if we're ever going to *change* anything, it's going to have to be a *fight.* A war. (Going to war for oil we know how to do. We've got to go to war to get away from oil.) There's way too much money at stake for the oil companies. They'll do whatever it takes to protect their profits. They have a hundred trillion dollars of oil still to be sold, and if we try anything to keep the money they see as their right to get from us ... it will get very nasty. Don't trust them. Don't believe them. Don't give in to them. Demand change. Rant over.

Back to acetone. I commute from San Diego to UCLA and back. 300 miles round trip. I've been using acetone for well over 30,000 miles. My car runs great. In fact, significantly BETTER with acetone. Smoother and more power. As for mileage? I've boosted my mileage from 27-29 MPG without acetone to to as high as 35 with acetone. (And I drive fast, so it could be a lot higher.) That's over a 25% mpg increase. Which translates to this: While you're paying $3.00 to fill up, I'm paying the equivalent of less than $2.25.


See for more information

And also visit my personal treatise for an in-depth look at my personal results for increasing my mileage from 27-29 MPG to upto 35 MPG. (You have to copy and paste the ENTIRE link)

I'm the film student with the 1993 Honda Del Sol.
Direct link: (Again, copy and paste the entire link.)

Car Talk is right about one thing though. If you get acetone on your paint, wash it off right away.

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By Robert (Guest Post)
August 14, 20060 found this helpful

By the way, it's TOTALLY UNTRUE that you can only use acetone with *premium fuel*. I've used 87 octane for the last 30,000 miles plus acetone with great results. I use about 2-3 ounces per 10 gallons. Test and experiment for yourself to find the sweet spot.


In fact, some peope get best results NOT using premium. I've found that it depends on a number of factors, mostly owing to the practices of individual gas stations, such as adding ethanol.

See my personal treatise listed in my previous link for more information.

Also see and and and

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By Gregory G. Patton (Guest Post)
June 15, 20070 found this helpful

I drive a 1990 Toyota Corolla, nearly 227000 miles, added 1.5oz (99.5% pure acetone) to fillup (Exxon gas) in June 2007. I drive 90% city stop/go and short trip traffic (Las Vegas, NV). I keep track consistently of mpg and usually it's 26-28 mpg. Filled up 6/15/07, 7.359 gallons having had driven 247 miles in two weeks. I calculate 33.6mpg which is an additional 14.8%-20.8% increase in mpg. Negligible change in my driving habits. I realize maybe addition of acetone just cleaned fuel injectors, but I use RedLine Fuel Treatment on a regular basis.

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By Bruce (Guest Post)
July 18, 20080 found this helpful

This CarTalk link is a cutsie article that DOESN'T address whether or not acetone really works, and is irrelevant.


Editor's Note: Actually Bruce, they say it doesn't work and in fact can cause harm by eating through paint if it is spilled on your car and rubber hoses.

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