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Click on image for the lowdown. 
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| | | Forums66 Topics128,029 Posts1,055,417 Members48,422 | | 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 2012 Posts: 130 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 130 | I have a 49-3100 with a 55-235 engine. I don't drive truck in winter. I change oil in spring, mid summer and late fall. I use 10-30 synthetic oil.
I have a oil filter and understand about 10% oil is filtered.
What are opions on keeping or removing filter. | | |
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