Phillips 66® Type M Aviation Oil is an ashless, non-dispersant, multi-grade engine oil recommended for use in aircraft piston engines where the operator prefers a mineral oil-based engine oil that does not contain dispersant additives. It provides easier starting and quicker oil circulation at low temperatures compared with single-grade mineral oils, while maintaining high film strength at high temperatures and under high loads for protection against wear and piston scuffing.
Type M Aviation Oil typically is used as break-in oil for newly overhauled engines where all-mineral type oils are recommended. The multi-grade formulation helps reduce cylinder glazing tendency during break-in. Break-in normally is accomplished in less than 25 hours of engine operation.
Applications
- Aircraft piston engines where the operator prefers a non-dispersant engine oil
- Break-in” oil for newly overhauled aircraft engines
- Type M Aviation Oil meets the requirements of:
-SAE Standard J1966
-U.S. Military Specification MIL-L-6082 (obsolete)
Features and Benefits
- Easier starting and quicker oil circulation at low temperatures compared with single-grade oils
- High film strength for protection against wear and piston scuffing, even under high-load conditions, such as takeoff, and at elevated operating temperatures
- Reduces cylinder glazing tendency during break-in, compared with single grade oils





