Phillips 66 Type A 100AD is a premium, single grade oil designed for opposed piston aircraft engines that call for SAE 50 or Commercial Grade 100 oils. Formulated to provide cleaner engine operation, Type A 100AD has the same high-quality, ashless dispersant (AD) additive chemistry found in X/C aviation oils. The finest petroleum mineral base oils help lower oil consumption and protect engines from excessive wear and piston scuffing. It also provides excellent corrosion protection.

Type A 100AD may be used for a quick and clean break-in and for continued use right to TBO.