Have you had results with acetone.
 

Anyone who has used acetone mixture and has had success please list mixture, make and age of car.

Can't remember my mixture, pretty sure it was the suggested ratio. 1992 V6 auto Camry. I also had my coolant boil over for the first and only time.

results
 

I couldn't tell. The only difference was that it made my idle speed lower. No harm.

Did you stop using it then? Also what kind of increase did you see before and after.

Yup, it was on a run up the Cajon pass, after that I refilled coolant and stoped using acetone, no more trouble for the rest of the summer. I saw a difference of 2-3mpg over my best trip mpg (~34mpg) up to that point. The trip was hwy with the same distance, same traffic, same weather, and 55mph cruise control. The only problem was I didn't get in enough runs to determine if it was a glitch or if the acetone actually doing something, I also had ~5 miles our of 50 that were street, which could've influenced the results. I've heard it leans out the engine, but that's just heresay until I brush up on my chem... You wouldn't happen to know if your oxygen sensor is titanium dioxide, or zirconium dioxide?

No I don't. I think it's probably zirconium.

3 oz per 10 G...'87 300ZX na...around a 20% gain...but some part of this was due to easier driving.

It was inconclusive for me. without a scangauge It makes results very difficult.

I used it for a little more than a month last year which translates into about a 1000 miles and didn't see any change in FE before, during or after using the stuff.

-- Scott

It matters that you got some good acetone and that you drive to save otherwise you dont' get an improvement - it allows you to get even better gas mileage with it that without it - it doesn't give you better gas mileage it allows you to get better mileage. I couldn't get past 46mpg until I used it now I get 50-55mpg.