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| | | Forums66 Topics128,179 Posts1,057,162 Members48,465 | | 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: Jun 2017 Posts: 9 'Bolter | | 'Bolter Joined: Jun 2017 Posts: 9 | I have just replaced all the bearings and seals in my 1968 Chevrolet C60 dump truck. I want to change the gear oil in the differential which is a GM3873551 that when Googled says it is a T170. Can anyone tell me how to drain the oil and how much oil does it hold? I am assuming it is 90 weight oil. I have read that you are suppose to fill the differential and then jack the truck up on each side to allow the oil to run over and fill the bearing wells and then top it off again. I don't see a drain plug on it anywhere. Thanks for your help. | | |
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