I have been using acetone in 2 of my vehicles for over a year now
I will say this 1st off...in both trucks (a 1992 Dodge Dakota 318V8 and a 1989 Chevy S-10 2.5L I4) both fuel pumps went bad after approx 3-10 tanks, well the Dodge the motor stopped working, the Chevy the rubber hose between the pump and the plumbing burst...I would equate and almost guarantee both occurrences were due to NOT changing my fuel filter and the acetone emulsifying all the poo in the tank to which it partially clogged up the filter and caused excessive back pressure in the lines, the Dodge pump just quit because it a) was the original from 1992, b) was pumping harder to push the fuel thru the lines, the Chevy blew the rubber hose and stopped pushing fuel in the line.
If you do choose to experiment with acetone...PLEASE change your fuel filter after 2 or 3 tanks or it could cause costly repairs! I will say this..after approx 10 tanks of acetone in the Chevy S-10 the tank inside was PERFECT...no water, no floating poo, NOTHING but clean golden gasoline!
Currently at this time there may be up to 12 different "types" of gasoline on the market driven by region and requirements due to the 1990's Clean Air Act Amendments [
http://www.heritage.org/Press/Commentary/ed040606b.cfm] The fuel mixtures are HEAVILY regulated and their chemical makeup is demanded to be precise...thus one company couldn't just slap a 2oz per 10 gallon acetone mixture and go see see ours is better than theirs without getting a HUGE fine slapped on them...so they don't...plus it would cut into their profits as acetone would be another mixture and it would cost them more to make
Acetone is a surfactant, it allows the mist of fuel particles to vaporize more readily, thus instead of fine droplet it can be more of a pure gaseous vapor which is the perfect fuel (hydrogen, propane), pre-heating your fuel also helps vaporization as well..acetone would improve that as well
I notice that my current truck (Chevy S-10) idles more smoothly, has more power, and I get approx 10-15% better gas mileage out of it, but its a truck and the wind resistance is HORRIBLE compared to my old Nissan Sentra that I put acetone in and got a very easy 40ish MPG.
I know that acetone DOES work..but be prepared to change your fuel filter because acetone will clean the tank and the only place it can go is into the filter, be prepared to change your filter ever 10-15 tanks like clockwork otherwise you will get a clogged filter and a damaged/destroyed fuel pump
I put 2oz (approx 1/4 cup) of acetone in my S-10 tank when it hits the 1/4 tank line (it reads off so 1/4 tank is actually 1/8 tank) and I usually put almost EXACTLY 10 gallons in...I will start keeping my fuel history up so you can see the results
Oh the biggest improvement in my vehicles were when I checked the tire pressure religiously..I put EXACTLY 35psi cold, I also found a great additive/runflat product that seems to seal the tires and allows the tire to hold air longer, its called
Ride-On and instead of having to put 1-2 psi a week I can go up to a month before it needs it
Improper tire inflation is the FASTEST killer of fuel economy...PERIOD!
Acetone works!
a new policy....I intend to ignore the nescient...a waste of time and energy. 
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