S-4SR Snowmobile 4-cycle oil with NASCAR proven technology is a 100% synthetic formula designed for high stressed 4-cycle racing engines in the most severe conditions
S-4SR is an MPZ fortified formula that offers the ultimate in viscosity control, anti-friction, anti-wear and improved power output
It is formulated to reduce engine temperature and wear from high load conditions
A selective additive system and polymer chemistry also provides anti-oxidation, anti-foam, and anti-rust features to keep engines protected
S-4SR offers the best protection for engines running at high RPM,  high temperatures and under extreme loads or endurance type conditions