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Click on image for the lowdown. 
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| | | Forums66 Topics128,102 Posts1,056,184 Members48,436 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2021 Posts: 6,805 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,805 | The yellow stuff uses some sort of organic additive while the green stuff uses an inorganic additive. They're both ethylene glycol based, however.
Supposedly the yellow is meant for longer life. I generally try to stick with the tried and true green ethylene glycol.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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