Here you go.........from their site.........
Sea FoamŪ is safe for ALL commonly used engines Automotive, Truck, Industrial, Agricultural, Motorcycle, Marine, Small Engines (lawnmowers, yard tools, etc.), and even Rotary (Wankel Type) engines. 2-cycle and 4-cycle as well as diesel engines, when used as directed, are completely compatible with Sea FoamŪ.
http://www.seafoamsales.com/