ORIGINAL: liquid_TR
BTW, here is the current setup:
Im using Bisson Pitts muffler and JXF 18x6W prop and got 8400+ steady RPM with the glow carb.
The oil ratio of this reading was an accidental 25% Amsoil. (4:1 ratio!) still ran very good - a LOT of black oil dripping from the exhaust tho
Please try a mix with 20-1 ratio using Penzoil Air cooled lube. I do not think Amzoil good at high volumes. Use any good regular Hi perfomace oil. Thats what I am going to try. No Amzoil for me. Capt,n