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Phillips 66 Type M 20W-50 Oil

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Overview

Phillips 66 Type M Aviation Oil is an ashless, nondispersant, multigrade 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 is used as break-in oil for newly overhauled engines where all-mineral type oils are recommended. The multigrade formulation helps reduce cylinder glazing tendency during break-in. Break-in normally is accomplished in less than 25 hours of engine operation.

Features

  • 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

Specifications

  • SAE Standard J1966
  • U.S. Military Specification MIL-L-6082 (obsolete)

Applications

  • Aircraft piston engines where the operator prefers a nondispersant engine oil
  • “Break-in” oil for newly overhauled aircraft engines
  • Frequently Purchased With
  • Customers Also Viewed

Reviews

White B Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 12QT CASE

November 16, 2022

White B Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 12QT CASE

September 23, 2022

It’s always good. Good price and just work like aeroshell, I use in my Warrior Lycoming D3G engine.

Indar H Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

June 8, 2022

A good product for breaking in a new engine.

Peg B Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

May 20, 2022

Delivered On Time as Always with Aircraft Spruce.

James L Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

March 29, 2022

Great

Daniel D Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

March 11, 2022

Jeff A Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

December 29, 2021

use for new engine break in

Stuart T Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

September 8, 2021

we use Phillips 66 oil because of price and quality particularly in engine break in oil.

Lynn E Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 12QT CASE

August 26, 2021

This stuff is slippery!

Robert P Verified Purchase

PHILLIPS 66 TYPE M AVIATION OIL 20W50 QT

June 16, 2021

Q&A

Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is there a shelf life for 20W-50 Mineral oil? <BR> Per Phillips Tech support: No set shelf date as long as kept in controlled environment. They do suggest that the product be tested before use if 5 years or older.

Like other oil suppliers, Aeroshell as an example, there is not a specific "shelf life" listed, but just a recommended re-test time from date of manufacturer.