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Click on image for the lowdown. 
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| | Forums66 Topics128,052 Posts1,055,721 Members48,426 | | 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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| 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!
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#22877 07/29/2003 6:37 PM | Joined: Mar 2002 Posts: 12 New Guy | | New Guy Joined: Mar 2002 Posts: 12 | Thanks for all your help. Running 10w30 now. I have switched to 20w50 in the past to gain about 10 psi. What do you guys think of oil additives such as sick 50 or greased lightning for this problem?? | | |
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