Luv 4WD L4-110 1800cc (1982)
Drive Axles, Bearings and Joints: Technical Service Bulletins
Differential - Additive Recommendations for G80 Axles
Number:
90-139-4A
Section:
4A
Date:
January 1990
Corporate Bulletin No.: 964201
Subject:
LOCKING DIFFERENTIAL LUBRICANT
Model and Year:
1981-90 ALL LIGHT DUTY TRUCKS EQUIPPED WITH G80 REAR AXLE
TO:
ALL CHEVROLET DEALERS
Chevrolet Motor Division does not recommend the use of any limited slip additives in light trucks with G80 axles. Rear axle additives delay the
engagement of the locking mechanism and may decrease axle life.
The recommended lubricant for all light truck rear axles, including G80, is SAE 80W-90 GL5 (GM part # 1052271). Trucks exhibiting rear axle chatter
should be drained and refilled using the rear axle fluid indicated.
