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Mod | | | Forums66 Topics128,042 Posts1,055,505 Members48,424 | | 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: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | E.O.S. has been around for 50years that I know of. I sold it when I was a parts man back in the 50's and 60's. I haven't been in a Chevy dealership in decades so I don't know if they still carry it. Basicly it was just an oil thickener like STP.
And as Jeff mentioned this subject has been beat to death, not to worry unless your talking about a high performance engine.
Denny G
Denny G
Sandwich, IL
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