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rear diff. fluid change

This is a discussion on rear diff. fluid change within the Drivetrain forums, part of the LSx Technical Help Section category; so i have a 01 z28 4a with 75k on it... ibought the car used with 45k on it back ...

  1. #1
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    pewter
    2001 camaro z28

    rear diff. fluid change

    so i have a 01 z28 4a with 75k on it... ibought the car used with 45k on it back in jan.05. i dont know if the previous owner ever changed the fluid. will it hurt my diff. if i change it now???

    also which diff. does my car have ...torsen or aurburn??

    is this all i need to change it..
    2qts m1 75w90
    gasket
    high temp sylicone
    gm additive.

    do i need a torque wrench to tighten the bolts?? and whatsequence should i tighten the bolts to get a proper seal???

  2. #2
    That guy thearborbarber's Avatar
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    1991 Suburban

    You should have a torsen diff. Either way you have the right supplies to service both. Tighten the bolt is a criss cross manner as you would a tire. I used a torque wrench and 25 foot pounds. But it's not nessessary.

  3. #3
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    pewter
    2001 camaro z28

    Quote Originally Posted by thearborbarber View Post
    You should have a torsen diff. Either way you have the right supplies to service both. Tighten the bolt is a criss cross manner as you would a tire. I used a torque wrench and 25 foot pounds. But it's not nessessary.
    will it hurt my diff. change the fluid now at 75k?? lets say if it hasnt been done ever??

  4. #4
    Member c5z28's Avatar
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    Quote Originally Posted by z28_81 View Post
    will it hurt my diff. change the fluid now at 75k?? lets say if it hasnt been done ever??
    It won't hurt at all, your doing a necessary service. Make sure you have some sort of pump to fill it back up otherwise its a real bitch to get in there.

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