2014 Mack CXU rear diff gear oil?

Discussion in 'Ask An Owner Operator' started by xairx, Sep 17, 2019.

  1. xairx

    xairx Light Load Member

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    I'm looking to change the gear oil in my Mack. The dealer said $350 per diff just for the oil. I'm gonna do the job myself but... what oil would you recommend? Seems like almost any synthetic lube oil 75W-90 should do. What do you guys use?

    I'm very interested in the Sinopec GL-5 75W90. It's almost three times cheaper than Mobil1. Has anybody used it before? I did some research on it and it appears to be up to standard...
     
  2. Atlaw4u

    Atlaw4u Light Load Member

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    That's on my to do list and I'm planning to use Sinopec. You can get 5 gallon tubs shipped to you from E bay if you can't find it locally.
     
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  3. xairx

    xairx Light Load Member

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    I did some more reading and ordered Sinopec. Apparantly Mobil is not on the list for a reason. It causes slippage.
     
  4. Ridgeline

    Ridgeline Road Train Member

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    Don't use mobile one, use sinopec. We had two axle failures with mobile one and Mack said it is why they didn't recommend it.
     
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