Shell Rotella T1 SAE 30 Heavy Duty Engine oil uses well-proven performance additives to fight engine wear and prevent deposits, providing reliable lubrication and consistent performance. Suitable for day to day use in turbo and non-turbocharged older engines, Shell Rotella T1 provides reliable all-year-round performance in the applications for which they are intended. Shell Rotella T1 provides excellent wear protection that promotes engine durability. It has a low ash content that minimizes the formation of deposits and keeps intake ports clean. It offers excellent rust and corrosion protection for critical engine parts. Shell Rotella T1 is suitable for use in many turbo- and non-turbocharged light/medium-duty diesel-powered trucks and transport operations, including city operations and long-distance service. It also provides dependable lubrication for small-to-medium agricultural equipment such as tractors, as well as diesel-powered water pumps and generators.