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| | | | Joined: Feb 2001 Posts: 39 Member | | Member Joined: Feb 2001 Posts: 39 | hello all. what type(weight) of gear oil should i use in the rear end of my 48 GMC? it's a 1 ton dually. also, what kind of oil goes in the 4-speed crash box? thanks!
1948 GMC 250 Series Flatbed
| | | | | Joined: Feb 2000 Posts: 177 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 177 | I use Vavoline 90 wt. In diff and standard tranny in my 1/2 ton '54 with no problemo.
Adios, Kip
Write On The Cross At The Head Of My Grave
To Whiskey And Women Here Lies A Poor Slave
| | | | | Joined: Nov 2000 Posts: 582 Shop Shark | | Shop Shark Joined: Nov 2000 Posts: 582 | OneTon:
Asked this same question a while back for my '49 1/2 ton. I used 90-120 wt hypoid Valvoline oil in the rear end and used 50 wt HD motor oil in the tranny. Don't know if it's the same for a 1 ton or not. | | |
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