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Click on image for the lowdown. 
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| | | Forums66 Topics128,081 Posts1,055,959 Members48,430 | | 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: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | If you have hydraulic lifters then STP would be the worst thing to put in your engine. You want a lighter oil for startup, one that travels faster and easier to the lifters to pump them up and quiet them. A 10w-40 would be a good choice. My post above assumed a Thriftmaster was a solid lifter truck engine.
Stuart | | |
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