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Mod | | | Forums66 Topics128,152 Posts1,057,011 Members48,460 | | 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: Nov 2006 Posts: 84 'Bolter | | 'Bolter Joined: Nov 2006 Posts: 84 |
I am going to change the gear oil in my SM 420 and wanted to see if you guys know how much they hold and what weight oil to use.
Thanks,
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Treyz, The spec sheet says 6 pints of 90 weight. Today's call out would probably be 80w-90 which is more readily available and might work a little better. I have included a link to a poop-sheet on your transmission. Good luck. http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0730.htmStuart | | | | | Joined: Nov 2006 Posts: 84 'Bolter | | 'Bolter Joined: Nov 2006 Posts: 84 |
Thanks for the info Stuart. That is just what I needed...
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