Bison Two Stroke Oil Self-Mix is a premium quality, non-ash forming two-stroke motor oil. It is SAE 40 oil which is pre-diluted to SAE 20 for rapid mixing with petrol. Bison Two-Stroke is an ideal for two-stroke engines where oil is mixed directly with petrol in tank.
Water-cooling is widely used in outboard engines. Most of the engines in other applications are air-cooled. Depending on the degree of cooling, engine design and the type of service, the engines have various preferences for oil performance. Protection against ring sticking and port blocking Protection against piston and cylinder scuffing, Protection against deposit induced pre-ignition, Anti-rust.