Lucas SAE 10W-40 is a blend of high quality base stocks and an exclusive high performance additive package that ensures minimum drag, extended engine life, longer oil life and easy cold weather starting. Designed to use in gasoline engines only. The exclusive additive package in Lucas SAE 10W 40 allows for extended drain periods. Lucas SAE 10W-40 is excellent for use in turbo charged engines. The user can expect longer oil life and lower oil temperature. Meets or exceeds all manufacturers specifications for A3/B3/B4 and API SN.