Phillips 66 X/C 20W-50 is an ashless dispersant multi-grade aviation oil designed for reciprocating aircraft engines, providing easy cold-weather starts and high-temperature protection. It combines high-quality mineral oils and a synthetic polyalphaolefin (PAO) base with an ashless dispersant additive package.
Key Features
- Multi-Grade Performance: Flows easily at low temperatures for better cold starts, yet maintains strong film strength at high operating temperatures.
- Ashless Dispersant: Keeps engine parts clean by preventing sludge and varnish deposits from forming on critical components.
- Lycoming Approved: Meets the stringent requirements of Lycoming (Spec. 301F) and is widely used in various opposed piston aircraft engines.
- Break-In Note: This is a mature engine oil and should not be used during the initial break-in period of a brand-new or freshly overhauled engine (use straight mineral oil first).
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