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| | | Forums66 Topics128,012 Posts1,055,311 Members48,419 | | 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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| | | | Joined: May 2010 Posts: 5 New Guy | | New Guy Joined: May 2010 Posts: 5 | hi fellows. ive been told that i should use 20/50 oil in my 454 when i change the oil.ive never heard of this, any reason for it? any help would be a big help. thanks again. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | It's way too thick unless the old engine is wore out & you just want to run it some more for a while.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Oct 2008 Posts: 321 'Bolter | | 'Bolter Joined: Oct 2008 Posts: 321 | I ran that weight of oil one time. It was in a '77 Ford F150 w/ a 400 and I only ran it in the summer. Didn't notice any kind of benefit in any way over 10/30. Your best bet is to just stick with the recommended oil viscosity.
1963 Chevy C20 Longbed Stepside
1978 Chevy K30 Custom Deluxe
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