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Click on image for the lowdown. 
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| | | Forums66 Topics128,083 Posts1,056,331 Members48,442 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
API GL-5 Gear Oil (not a hypoid gear oil in light trucks).
80 weight (in winter) or 90 weight mineral oil in manual transmissions
90 weight or 140 weight (in high ambient temperatures) mineral oil in light truck rear ends
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