01 Silverado 1500, 10-Bolt Rear Differential - Fluid - Chevrolet Forum - Chevy Enthusiasts Forums

01 Silverado 1500, 10-Bolt Rear Differential - Fluid


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DGorris's Avatar
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October 2nd, 2011, 11:18 PM   #1  
01 Silverado 1500, 10-Bolt Rear Differential - Fluid

Hey boys,

Noticed the rear differential was leaking on the truck last week so this weekend I got around to changing the seal/fluid. After replacing the cover with the new seal/fluid, I noticed we've still got a leak. Where the bottom of the cover meets the actual differential there is a hairline crack.

Have the new cover/seal package on order, going to replace it this weekend. One question though, what fluid is recommended for this truck? It's a 2001 Silverado 1500, Ext. Cab, 5.3L Vortec, 4x4, 10-bolt rear end.

Thanks,

-Dane

 
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October 3rd, 2011, 10:41 AM   #2  
I used 75w-90 synthetic I do believe...which I'm pretty sure I read is what came out of it

 
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October 3rd, 2011, 2:32 PM   #3  
Okay, that's also what I was told, but when we changed the seal/fluid last week my buddy said 90W-140 (or is it 140W-90?), so that's we used. He said the locker in the rear end needs this (although he has a 2500 HD). The truck is still sitting and hasn't been driven since the change, so if that's not the correct fluid I still should be okay until this weekend when I change the cover/seal/fluid again.

Thanks again,

-Dane

 
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October 3rd, 2011, 2:37 PM   #4  
Posted By: DGorris Okay, that's also what I was told, but when we changed the seal/fluid last week my buddy said 90W-140 (or is it 140W-90?), so that's we used. He said the locker in the rear end needs this (although he has a 2500 HD). The truck is still sitting and hasn't been driven since the change, so if that's not the correct fluid I still should be okay until this weekend when I change the cover/seal/fluid again.

Thanks again,

-Dane
It's 90-140, Unless your pulling alot, and in hot weather, I'd go also with 75-90W

 
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October 3rd, 2011, 8:03 PM   #5  
Noted.

Thanks boys,

-Dane

 
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October 6th, 2011, 11:20 AM   #6  
Specs say SAE 80W-90 GL5 (P/N 10950849).

 
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