Car Lube Plus Full Synthetic Motor Oils have been field tested to be comparable to American, European and Japanese manufacturers' requirement for: ACEA A1/B1 & A5/B5, Ford WSS-M2C930A AND WSS-M2C945A (5W-20), AND WSS-M2C929A WSS-M2C946A (5W-30); Chrysler MS 6395, Dexos, and GM 6094M as well as many other Ford, Honda, Mazda, Mitsubishi, GM and Chrysler vehicle requirements where a premium API SN synthetic motor oil is recommended