CRC Marine 06068 Engine Stor® Fogging Oil, 13 OzAs fogging fluid, it protects outboard motors, marine engines & internal combustion engines, insures longer life. As long term metal protectant, it keeps pistons, rings & cylinder walls corrosion free. Also protects electrical connections in use storage. 13 oz Protects outboard motors Marine engines & internal combustion engines Insures longer life, keeps pistons, rings & cylinder walls corrosion free Protects electrical connections in use storage.