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Mod | | | Forums66 Topics128,115 Posts1,056,292 Members48,439 | | 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!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Sep 2013 Posts: 1,364 'Bolter | | 'Bolter Joined: Sep 2013 Posts: 1,364 | In the summer my 1951 216 gets 15W40 diesel oil, winter it's 5w20. I'd use 15w40 year round except for the fact that when the temps get into the 20's it pours like thick molasses. Not sure how the oil slinger would like that.
Now that said, 15w40 has been in my Dodge Cummins diesel year round for 20 years and at 275k miles, all's still good.
RonR
1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
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