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syn 75w90 front dif?

Discussion in 'Chevy Trucks' started by mow4cash, Dec 17, 2009.

  1. mow4cash

    mow4cash Member
    Messages: 41

    Is it ok or good to use mobil or amsoil 75w90 in the front dif of a 2002 chevy2500hd. I know it calls for 80w90 gl-5 but have heard its ok to use. I would like to be able to use the same fluid in the front and rear so i can purchase a case of it if possible.
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Sure synthetic in the front diff is fine.
  3. ticki2

    ticki2 Senior Member
    from NH
    Messages: 175

    If you have the black round breather on the front differential you should upgrade to the white to go to synthetic.