ARROW DIESEL TURBO Multigrade engine oils are formulated from a special selection of high-quality solvent refined and hydrotreated base stocks and high performance advanced additive technology to meet and exceed the most demand­ing current lubrication designed for use in diesel engines with or without turbo in a wide variety of automotive vehicles from passenger cars, heavy-duty tractors, light trucks and vans. ARROW DIESEL TURBO engine oils are available in SAE J300 viscosity grades 25W50., Meets the API requirements of CF-4/SF