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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: fast823 on August 30, 2009, 10:57:40 pm

Title: Changing front, rear and transfer case oil?'s
Post by: fast823 on August 30, 2009, 10:57:40 pm

I think I am going to change the oil in the front and rear end and transfer case before harvest and I was wondering what oil to run. Should I put 57-90 synthetic in the front and rear? What oil in the transfer case? Also how much do they each hold thanks. I don't remember when they were changed last so I figured it would be a good time to do it. Thanks

Title: Re: Changing front, rear and transfer case oil?'s
Post by: VileZambonie on August 30, 2009, 11:04:11 pm

How about some information. What differentials do you have? Is it a posi? What transfercase do you have?

Title: Re: Changing front, rear and transfer case oil?'s
Post by: fast823 on August 30, 2009, 11:15:20 pm

Um not sure it is a 79 chev 4x4 with turbo 350. Where would I find that info?

Title: Re: Changing front, rear and transfer case oil?'s
Post by: Captkaos on September 02, 2009, 02:25:27 pm

count the number of bolts on the diffs,
what is the shift pattern of the t-case?

Title: Re: Changing front, rear and transfer case oil?'s
Post by: fast823 on September 07, 2009, 01:00:21 pm

12 bolt rear. 44-8F front. Shift pattern top to bottom Lo Loc, Lo, N, HI, HI Loc. Does that help?

Title: Re: Changing front, rear and transfer case oil?'s
Post by: fast823 on September 13, 2009, 07:47:18 pm

Anybody?

Title: Re: Changing front, rear and transfer case oil?'s
Post by: VileZambonie on September 13, 2009, 09:25:42 pm

Np203

10w30 or 10w40 in the T-case.
80w90 in the front and rear diff.

Title: Re: Changing front, rear and transfer case oil?'s
Post by: fast823 on September 14, 2009, 10:38:14 am

Thanks