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IFarmtoo

Posted 8/20/2013 07:52 (#3277517 - in reply to #3277255)
Subject: Re: What oil should i use for tranny and rear diff on 1977 GMC 6500?

Eastern Iowa

If they are are low this could be a good time to drain them both and start new. Not many used syn. Oil back in 1977 but you could use them now like mentioned it would be a plus for shifting in the transmission. 80w90 or 75w90 for rear end and 50w for the transmission.

What oil should i use for tranny and rear diff on 1977 GMC 6500? - Loadhog : 8/20/2013 00:22
- Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - WTW : 8/20/2013 00:24
- RE: What oil should i use for tranny and rear diff on 1977 GMC 6500? - dave morgan : 8/20/2013 01:34
  - Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - retento : 8/20/2013 04:23
- RE: What oil should i use for tranny and rear diff on 1977 GMC 6500? - Larry NCKS : 8/20/2013 04:52
  - Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - IFarmtoo : 8/20/2013 07:52
- RE: What oil should i use for tranny and rear diff on 1977 GMC 6500? - tim4870 : 8/20/2013 08:10
  - Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - Super 65 : 8/20/2013 08:36
    - Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - Jon Hagen : 8/20/2013 09:21
      - Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - Rusty6 : 8/20/2013 09:47
- Re: What oil should i use for tranny and rear diff on 1977 GMC 6500? - durallymax : 8/20/2013 12:55

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