Lucas Semi-Synthetic 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 for use in both gasoline and diesel engines. The exclusive additive package in Lucas Semi-Synthetic 10w-40 is excellent for use in turbo charged engines. Meets or exceeds all manufacturers specifications for A3/B3/B4 . SM/SL/SJ/CF. Exceeds VW 505.1-505.00-500.00 and Ford WSS M2 C 917 A.