99 KW What Differential Oil Are You Using

Discussion in 'Kenworth Forum' started by Jonas, Dec 8, 2011.

  1. Jonas

    Jonas Bobtail Member

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    Anyone out there with a '99 Kenworth W900 using Schaeffer Oil in the trans and diff?
    What weights are you using? Full Syn or Syn blend? Any feedback on results or satisfaction?
     
  2. rollin coal

    rollin coal Road Train Member

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    Pullingtrucker uses Schaeffer in his trans, and diffs and likes it. He drives a red Pete 379 that will be in his avatar/sig pics and can probably be found in that (Peterbilt) subsection of the forum. If you had more posts you could pm him.
     
  3. Jonas

    Jonas Bobtail Member

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    Thanks, Rollin Coal,
    I'm just a Schaeffer rep in N. CA. and my customer felt the 80W140 seemed warmer than the 75W90 he used before. I think anymore posts would cross the line into "advertising" and I would get banned. Thanks again.
     
  4. rollin coal

    rollin coal Road Train Member

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    What sort of temps was he seeing before and after? He's probably worried about nothing.
     
  5. Jonas

    Jonas Bobtail Member

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    Thank you for the reply. I will check with him if I can get him to return a call. I doubt he has done any "scientific" checking on the temps. Most likely a gut reaction.