Steering: Specifications

The National Lubricating Grease Institute (NLGI) has developed a symbol (Certification Mark) to aid the vehicle owner in the proper selection of grease for the lubrication of wheel bearings and chassis components. This symbol is located on the grease container and identifies the application and quality of grease.

There are two groups identified, those for wheel bearings (Letter "G") and those for chassis (Letter "L") lubrication. Performance categories within these groups result in dual letter designations for each group. the letter designations shown are the highest quality level available and when combined as shown can be used for both bearing and chassis lubrication. Use only those greases that have the NLGI symbol on the container along with the proper quality level for your application.