Rear end fluid

Discussion in 'Chevy Truck Forum' started by The Scottsdale, May 17, 2017.

  1. The Scottsdale

    The Scottsdale New Member

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    I have a 1990 Chevy Scottsdale K1500 and the rear end is leaking and Im going to replace the gasket and cover but Idk what kind of fliud it takes and I dont have the manual. Can anyone help?
     
  2. gmctrucks

    gmctrucks Full Member

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  3. leolkfrm

    leolkfrm Full Member

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    regular gear oil, with additive if posi traction
     
  4. dirtrider73068

    dirtrider73068 Senior Moderator
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    What leo said, if not posi just regluar old fashion 90 weight oil is all you need. Its all I ever used, even in my old beater has 250k and think still has factory gears, never been changed but does have a leaking seal I just get some 90 weight top it off and run it, but I also don't tow with it and don't give it hel.l either since its got its age and mileage on it.
     

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