Castrol Power Steering Fluid is a mineral oil based fluid suitable for most power steering systems including Dexron II, Dexron III, Ford M2C 138 CJ, Ford Mercon, Type A, Suffix A, Ford M2C 166H, Ford M2C-33 F or G. It is also suitable for SAE 10W engine oil: e.g., API SF, SG, SG, CC, CD, SAE 10W-20 engine oil as well as ISO 32 or 46 hydraulic oil and Mitsubishi Power Steering Fluid.