1979 Camaro rear differential

Discussion in 'Transmission & Driveline Topics' started by miastewie, Jun 19, 2019.

  1. miastewie

    miastewie New Member

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    I've been doing some research and some guys mentioned using 75w-90 oil and some mentioned using 80w-90 oil. Will either one work?
     
  2. Gary S

    Gary S Administrator Lifetime Gold Member

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    They are the same. 80-W90 was used originally before synthetics were easily available. Today, most synthetics call their oil 75-W90 while most dino oils are called 80-W90. Use either one.
     

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