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Click on image for the lowdown. 
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| | | Forums66 Topics128,113 Posts1,056,618 Members48,450 | | 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: Jan 2007 Posts: 63 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2007 Posts: 63 | 160w oil is what is recomended in 4speed truck trannys from Chevrolet. The problem is finding it in Canada. Mbile oil carries it but you may have to buy in 5gal pals. It's also known as 600w steam or cylinder oil. Never use a detergent oil in an old tranny. Especially if a 4 speed non-synchro. This information is from the original Chevrolet service manual. | | |
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