Acetone as a Fuel Additive

AddAcetone.com
Acetone In Fuel Said to Increase Mileage - Acetone said to improve the fuel's ability to vaporize completely by eliminating the surface tension that causes an increase in particulate vaporization temperature. (PESN; March 18, 2005)

A growing number of people are reporting their results, as tabulated here. Most have noted modest increased mileage (e.g. 2-15%), more power, more stable idle, faster start-up, cleaner emmissions. Part of that improvement is likely to be from the cleaning of the engine that the acetone accomplishes, without impinging lubricity. A few have not seen an increase in mileage at the concentration of acetone they tried. Too much acetone decreases mileage. Some have reported that Alcohol in the fuel tends to reduce the positive effects of acetone. No one has yet reported damage to their engine from acetone being added to the fuel. Several have soaked fuel components in pure acetone for extended periods and have not seen substantial effect other than some minor swelling.

Freequently Asked Questions regarding Acetone's Effect on Mileage and Performance
http://peswiki.com/index.php/Directory:Acetone_Additive:FAQ

Acetone In Fuel Said to Increase Mileage
Readily-available chemical added to gas tank in small proportion improves the fuel's ability to vaporize completely by reducing the surface tension that inhibits vaporization of some fuel droplets.
http://pesn.com/2005/03/17/6900069_Acetone/

Acetone and Lubricity of Fuel; Ester Supplements Could Help
Acetone's positive results in mileage, idle, emissions, power, come in part from its engine cleaning effect, removing the carbon build-up. Does acetone degrade lubricity, creating long-term wear issues? Data from years of acetone use do not show unusual wear. Esters purported to afford added protection.
http://pesn.com/2005/04/12/6900080_Acetone_and_Ester/