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11 members (52Carl, carbking, Gdads51, Bill Hanlon, 1955 1 Series, 2-Ton, Robert Crandall, fonz8261, greenie-reddy, 2 invisible),
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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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Your '51 was designed to run on 83 octane so running modern 87 is already providing an octane boost. I'm with Jerry on this one. Lead additive in a stock 235 that's operated within normal limits (not worked hard for extended periods & with stock valve springs) is unnecessary. If it makes you feel better, use it. Is it necessary? No. I've put many tens of thousands of miles on pre-unleaded engines using unleaded gas and have never had an issue.
Last edited by Tiny; 09/16/2016 10:51 PM.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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