http://peswiki.com/index.php/Directory:Acetone_as_a_Fuel_Additive

You decide.

I'm going to try it in my '74 M110 3oz per tank. The engine will be getting a valve job this summer anyway so I'm not too concerned. I wouldn't put it in my '73 M110 or my '72 M115 but I can sacrifice the '74.