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diff. fluid/ additive

This is a discussion on diff. fluid/ additive within the Drivetrain forums, part of the LSx Technical Help Section category; I just got myself a couple bags of car parts (oil, filters, plugs, wires, etc) so I can spend my ...

  1. #1
    Member imflyn's Avatar
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    diff. fluid/ additive

    I just got myself a couple bags of car parts (oil, filters, plugs, wires, etc) so I can spend my weekend doing what we all love most.... and had a quick question. I am going to change the rear end fluid and I purchased lucas oil gear oil and on the side of the bottle it said blah blah, for use with limited slip diff., no additives needed.

    So, is this good enough or do I still need the 4 oz of GM additive and what problems could arise from over treatment if I do put it in and it wasn't needed, or not putting it in if it was needed.

  2. #2
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    I used Mobil 1 synthetic fluid and it said the same thing - I put the additive in anyway...and have a '98 auburn from an M6 car in mine.

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    No additive needed for Torsen type diffs.

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    He's got a '98, so it's an Auburn right? My '01 (torsen) owners manual says to use it with a complete drain and refill too. Just for piece of mind I'd add it, only a few bucks.

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    Member imflyn's Avatar
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    thanks guys, I guess I'll play it safe and add it. I don't suppose it could do any harm...?

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    Quote Originally Posted by 02blkws6 View Post
    No additive needed for Torsen type diffs.
    I beg to differ. According to GM and Torsen both, *ALL* LSDs should have the additive to keep things quiet.

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