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| | | Forums66 Topics128,078 Posts1,056,039 Members48,433 | | 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: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | A stock 235 doesn't need a zinc additive. If you want to run synthetic go for it. Synthetic oil is superior to non synthetic in almost every way. Some reading.Agreed. If you feel you need the extra ZDDP, there are synthetics out there that have a higher content, usually in racing oil lines, like VR-1 from Valvoline.
Bill Burmeister
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