jd1828af
20+ Year Contributor
- 87
- 0
- Mar 31, 2003
It does not give any noticeable difference in gas mileage. I have been using acetone in my 96 tsi for over half a year now. There is no noticeable difference in mileage. It does, however, seem to some how increase the octane of the fuel. I have had a knock problem with the car since I got it. It will knock with anything under 95 octane. I have found that a full tank of 92 octane and 5 ounces of acetone is enough to stop the knock. I assume that the acetone is helping to reduce the surface tension and giving better fuel atomization through the injectors.



).
), i unplugged the ecu and let it idle for a couple of mins after plugging it back in. man, my idle was SO choppy for that time, obviously because it was getting more fuel than necessary. however, once i started driving and then leaned it out a bit, i noticed more "oomph" and would have beaten an evo (with intake and cat-back) that night with a better launch (i bogged it horribly), but i did pull on him through 1-2 and hung with him through 3... it was all over once 4 hit :sad:
gas companies do not tell you to use this in your cars because why??? oh yeah they want to sell you more gas at faster fill up intervals, duh!