Shell Rotella® T1 is a monograde oil providing quality lubrication and consistent performance with well-proven performance additives to fight engine corrosion and wear. Low ash content, minimizing formation of deposits and helping to keep intake ports cleanOxidation resistance to help maximize service lifeRust and corrosion protection for critical engine partsOptimized dispersant content to help prevent engine sludge and varnish depositsSuitable for use in many turbo- and non-turbocharged light/medium-duty diesel-powered truckAlso suitable for many low/medium-powered stationary applictions such as diesel-powered water pumps, generators, etc.