LOCOMOTIVE 0W-20 motor oil is made with full synthetic base stocks to meet the stricter volatility limits and fuel economy demands of the latest Turbocharged Gasoline Direct Injection (TGDI) engine designs. It is specifically formulated to prevent low speed pre-ignition (LSPI4) using advanced additive technology to address all these new performance demands. It protects today’s engines with enhanced performance in the areas of wear, cleanliness, and fuel economy while providing excellent protection for extended drains and extreme service conditions.