For automotive and heavy duty use. With PureBase. Maximum protection for diesel and gasoline engines. Long-Life SAE 15W-40 Heavy Duty Multigrade Engine Oil is recommended for use in trucks and cars with diesel and gasoline engines operating in severe service conditions such as trailer towing, stop and go traffic, and high temperature on-and off-road applications. Long-Life SAE 15W-40 meets or exceeds API CH-4 requirements as well as the warranty requirements of all major engine manufacturers. API Service CH-4, CG-4, CF-4, CF/SH, SJ. Long-Life is formulated with PureBase, our crystal clear, ultra-pure base oil, and Pennzoil's exclusive Long-Life additive system, state of the art technology found in no other heavy duty engine oil. Long-Life SAE 15W-40 benefits include: Excellent wear protection for longer engine life, consistent oil pressure, reduced oil consumption; outstanding soot control; maintains fuel economy.