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Click on image for the lowdown. 
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11 members (Gdads51, dt235sd, Gray_Ghost, Woodcmiami, Shaffer's1950, Nick in Manitou, Jon G, Otto Skorzeny, Hotrod Lincoln, walter74, 1 invisible),
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Mod | | | Forums66 Topics128,131 Posts1,056,372 Members48,441 | | 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 2010 Posts: 698 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 698 | In the beginning there were single weight oils. Single weight oils are thicker when cold and thinner as they heat up. So when the engine is cold you don’t get great lubrication and when it’s hot the oil thins out too much. So you chose a mid range oil as a compromise. Then multi-weight oils were invented. They act like a 10 weight when cold and a 40 weight when hot – the best of both worlds. Use the 10W-40W straight.
My Fleet: 19411953195919651966 1953 Willy's Pickup John Vegetarian- old Indian word for bad hunter
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