SAE J1899_202410

This SAE Standard establishes the requirements for lubricating oils containing ashless dispersant additives to be used in four-stroke cycle, reciprocating piston aircraft engines. This document covers the same lubricating oil requirements as the former military specification MIL-L-22851. Users should consult their airframe or engine manufacturer’s manuals for the latest listing of acceptable lubricants. Compliance with this specification must be accomplished in accordance with the Performance Review Institute (PRI) product qualification process as described in the documents referenced in 2.1.3. Requests for submittal information may be made to the PRI at the address shown in 2.1.3, referencing this specification. Products qualified to this specification are listed on a Qualified Products List (QPL) managed by the PRI. Approval and/or certification for use of a specific piston engine oil in aero applications is the responsibility of the individual equipment builders and/or governmental authorities and may be accomplished by compliance with or qualification to this specification. This revision introduces the E-38 Qualified Products Group as the qualifying activity for this specification. This revision allows the interchanging of new raw crude sources input materials proposed for manufacturer base stocks and updates the qualification formulation reporting and qualification testing requirements. The 150-hour engine test was revised to allow the incorporation of two Original Equipment Manufacturer (OEM) engines, which will improve the ability to qualify new oil formulations. This revision eliminates the 500-hour flight test in lieu of a second 150-hour engine test with the former being logistically unsupportable and the latter thought to be a more severe requirement for oil qualification than a 500-hour flight test.