Phillips 66 X/C Aviation Oil 20W-50

Description

Phillips 66 X/C Aviation Oil 20W-50 is a mineral-based engine lubricant formulated for air-cooled aircraft engines found in popular general-aviation aircraft. This straight-mineral oil with a 20W-50 viscosity grade provides protection across a wide temperature range, making it suitable for both warm-weather operation and cooler-season flights. The product is designed to reduce engine wear, manage sludge buildup, and maintain consistent film strength under the variable power settings typical of piston-engine flying.

Owners of Cessna, Piper, and Beechcraft aircraft with air-cooled engines should verify their logbooks and engine-manufacturer guidance before selecting an oil grade. Viscosity requirements vary by engine model, condition, and ambient temperature; some engines prefer a heavier oil (like 50-weight), while others benefit from lighter grades or straight mineral oils without multigrade additives. Always cross-reference the approved oil list in your aircraft’s maintenance manual to ensure compatibility with your specific powerplant.