After hearing about Wingfield's $80 fill up today, I thought I'd share my newest experiment:
1 oz. acetone for every 5 gallons of gas. Guys have been getting about 4-10 mpg better when doing this... I'm giving it a shot. If anything, my engine will get cleaned. Bought my quart of acetone at Wally-world, and so far, I've noticed that my acceleration is a lot smoother, and my idle speed is lower. So far, so good. I'll keep everyone updated. Right now I'm getting 14 mpg.
Some people are concerned about acetone eating your rubber hoses and stuff, but its only 1/600 of the capacity of my tank, nothing to worry about. Others have been doing it for years, with great success.
I've been trying to come up with plans, since last year, to add hydrogen gas to my air intake (I know, I know), using the electrolysis of water. I've done tons of research. And looks like pretty plausible. One possible problem is that hydrogen does have affects on engine blocks. There has been signs of brittleness occuring on the inside of the combustion chamber. Anyway, just ideas right now......
Here's the forum link i've been watching about acetone:
http://www.naxja.org/forum/showthread.php?t=51453