Marine RC engine fuel
What is considered to be a typical/acceptable fuel blend for the typical ringless tapered bore (ABC) marine engine? It seems most boat-specific fuels start at 30% nitro and go up from there, but there's rarely a mention of how much oil and what kind is typically used? I mix my own fuel and typically use castor and Klotz synthetic oils. It seems that marine engines typically use similar fuel mixtures that airplanes do with the nitro content being the only real difference. What are you folks using in your engines?