MIL-PRF-7808 Lubricating Oil, Aircraft Turbine Engine

What is MIL-PRF-7808?

MIL-PRF-7808 is a United States military performance specification that details the requirements for synthetic base lubricating oil intended for use in aircraft turbine engines.

This specification (formerly MIL-L-7808) covers high-quality polyol ester base stocks compounded with additives to provide enhanced resistance to oxidation and corrosion, as well as improved anti-wear protection. These qualities are essential for maintaining the longevity and efficiency of critical military and commercial aerospace systems operating under a wide range of conditions, particularly those requiring superior low-temperature fluidity and clean operation.

The lubricating oil meeting MIL-PRF-7808 is used in specific models of:

Aircraft turbine engines
Helicopter transmissions
Accessory and auxiliary power units (APUs)
Other equipment requiring a synthetic base oil with these characteristics.

Variations of MIL-PRF-7808

The MIL-PRF-7808 specification covers two distinct grades of synthetic base lubricating oil, classified based on viscosity and thermal stability requirements:

It's crucial to consult the latest version of the MIL-PRF-7808 specification (currently MIL-PRF-7808M) for the most accurate and up-to-date information.

Equivalent Specifications & Codes

In certain applications, MIL-PRF-7808 (Grade 3 or 4) can be cross-referenced to the following international and industry specifications and codes:

Note: There are no direct, widely cited European Defense or French specifications cross-referenced in the same way for this particular specification.

These products either meet or are approved to the MIL-PRF-7808 specification. Please consult the product page and product description for the specific grade/size you intend to purchase to ensure it will be supplied with MIL-PRF-7808 paperwork.

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