Shell Rotella T1 SAE 30 Heavy Duty Engine oil uses performance additives to fight engine wear and prevent deposits, providing reliable lubrication and consistent performance. It provides excellent wear protection that promotes engine durability, offers excellent rust and corrosion protection for critical engine parts, and has a low ash content that minimizes the formation of deposits and keeps intake ports clean. Providing reliable all-year-round performance, Shell Rotella T1 is suitable for mixed fleets combining large over-the-road diesel trucks with smaller diesel- and gasoline-fueled light trucks and passenger cars. It's also suitable for heavy equipment used for construction, mining, or quarry operations, as well as small-to-medium-agricultural equipment such as tractors and water pumps.For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner's manual