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Click on image for the lowdown. 
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| | | Forums66 Topics128,191 Posts1,057,364 Members48,469 | | 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: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the vent tube allows air to exit while you're filling the tank to avoid causing 'splash back', the vent hole in the cap is to allow for expansion/contraction as ambient temperature changes, which causes air movement up/down the filler
Bill | | |
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