Lubricant Review Institute
Lubricant Review Institute
From 1943, the US Army had qualified lubricants to its specifications, partly based on recommendations from an advisory body that it sponsored. Then in 1977, the US Army contracted SAE International® to review and make recommendations on candidate products based on military performance specifications.
SAE International® created the Lubricant Review Institute, which established a Gear Lubricant Review Committee. This allows the US Army to retain responsibility for approving and qualifying products to its specifications. Performance Review Institute® (PRI℠) has been involved in the Lubricant Review Institute since 1998, when SAE transferred the administrative function to us and a Qualified Product List was developed.
Program documents
LRI QPL
October 1, 2026February 12, 2026
LRI Committee Meetings
2026 Lubricant Review Institute (LRI) Committee Meeting Schedule
*NEW as of December 1, 2025
Letters to Industry
GL-18-01 – L37 Gleason Testing Data
GL-22-01 Report Error Identified
GL-23-01 – L-42 Testing Requirement
Archived as of November 30, 2014
Letters to Industry LOG
February 2023GL Forms
GL Forms 0-4 - January 5, 2026 Version
GL Forms EXCEL Spreadsheet Includes the Following GL Forms:
GL Form 0 – Summary of Reference and Candidate Lubricant Programs
GL Form 1 – Program Submission and Committee Recommendation
GL Form 2 – Gear Lubricant Formulation and Inspection Data
GL Form 2a – Supplementary Gear Lubricant Formulation Inspection Data
GL Form 3 – Gear Lubricant Laboratory Performance Results
GL Form 3a – Gear Lubricant Laboratory Performance Results
GL Form 4 – New Base Stock Consistency Data
Participate with us
Listing on the PRI-QPL
To list the evaluated and approved gear lubricant on the LRI Qualified Products List (LRI QPL), utilize the instructions for Original Qualification for Listing on the Qualified Product List (QPL). The term for qualification for each listing shall not exceed five (5) years.
Requalification Process
To requalify a gear lubricant after the five year period, follow the Requalification Instructions.
Reblends and Rebrands
The Qualifying Activity (PRI) will allow reblends/rebrands of qualified products by a second manufacturer with the manufacturing facility’s approval. The Reblending/ Rebranding Requests of Qualified Products Instructions apply.
Company Name Change
If a company that currently holds a listing on the LRI Qualified Products List (QPL) changes their company name and/or address, the Supplier Change of Address Form must be completed and submitted as instructed.
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