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04- z71

Discussion in 'Chevy Trucks' started by wirenut, Dec 6, 2011.

  1. wirenut

    wirenut Senior Member
    from nh
    Messages: 512

    what should i run for oil in front and rear diffs.
    thanks
     
  2. White Duramax

    White Duramax Junior Member
    Messages: 13

    Look in your owners manual for sure but should be 80w90 in the front and 75w90 synthetic in the rear.