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putting in new rear end fluid???

This is a discussion on putting in new rear end fluid??? within the Drivetrain forums, part of the LSx Technical Help Section category; I want to drain my old fluid and put new fluid in. I've got the car up now and i ...

  1. #1
    Rice Hungry GottaHaveLS1's Avatar
    Join Date
    Oct 2005

    1999 Trans Am M6

    putting in new rear end fluid???

    I want to drain my old fluid and put new fluid in. I've got the car up now and i only see a drain plug on the side but no place to put new fluid in. what do i do??

  2. #2
    Something Diabolical... chuckie669's Avatar
    Join Date
    May 2007
    Houston, Texas
    2000 C5 Torch Red

    The drain plug on the side is for fill. You can remove the fluid out of there but it's best to remove the dif cover. Just unbolt all of the bolts to loose, put a drain pan underneath and crack it from the bottom. Should all drain out in seconds.

    Then you can give everything a quick lookover and remove metal shavings from the dif cover which will be stuck to the magnet. Not sure of the best approach, but I took all of the gasket off and resealed mine with RTV red high heat stuff. Put it on the cover and let it set for thirty min or so before installing/bolting back up. Then just add your fluid back in through the side.

    I believe InstallU has a good writeup on this if you want to check it out.

    Good Luck,

  3. #3
    Senior Member splitfinger09's Avatar
    Join Date
    May 2007
    Bartlesville, Oklahoma, United

    Bright Rally Red
    2000 Camaro SS #5075 M6

    Same here just used red rtv and no gasket. no leaks in a year, also its full when it starts to come out of the fill hole

  4. #4
    We'll be back... GatorSS's Avatar
    Join Date
    Aug 2005

    Light Pewter Metallic
    2000 Camaro SS M6

    That would have been a great time to replace it with a drain-plug-featured cover. But at least you won't be changing gear oil as often as engine oil.

  5. #5
    Asshole bige97's Avatar
    Join Date
    Jul 2007

    '01 Silverado

    in school my teacher had us clean the gears and everything with brake clean too, got rid of all the old junk inside the rear.

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