http://www.chevron.com/products/prodserv/motoroils/supreme.aspx Applications Chevron Supreme Motor Oils are recommended for all four-stroke gasoline engines used in passenger cars, light trucks, powerboats, motorcycles, and other mobile and stationary equipment. They are excellent for high-revving engines in small cars and light trucks. All grades are specially formulated for use in turbocharged engines.
SAE 5W-20 provides optimum fuel economy and durability performance. It is recommended for Ford and Honda vehicles specified for this viscosity grade.
SAE 5W-30 is recommended by the majority of auto manufacturers for most of their late model North American vehicles, under all weather conditions. It also is recommended for use at very low temperatures involving cold starting, and for high fuel economy.