Glad you liked my web page Goni.

I've never found any difference using 3% acetone in my 2 strokes with zero nitro fuel as far as starting or running are concerned but it's supposed to reduce the ability of the methanol to absorb water so it's probably worthwhile just for that. The guy who wrote the introduction (John Modistach) has been making fuels for one of our largest model shops for many years so I'd go along with his experience using 5% in 4 strokes.