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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!
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| | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | PUSHNTIN,
While I don't have the factory spec's in front of me, I would say 80w-90 would be fine. Large rigs usually called for 140 gear lube but I don't think your 1 ton needs that.
Stuart | | |
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