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Thread: Diff Fluid

  1. #1
    RC poster
    Join Date
    Oct 2015
    Posts
    2

    Diff Fluid

    Just purchased UDR 2 weeks ago and I'm going through it front to back. My question is what front and center diff fluid to run?

  2. #2
    RC Qualifier
    Join Date
    Mar 2015
    Posts
    269
    The manual calls for 30,000WT diff oil in the front diff, and 1 million WT diff oil in the center gearbox if you want to maintain factory settings.

    I strongly suggest downloading the full manual from Traxxas. They don't supply it with the model, and it includes lots of helpful into like shock oil weights and tuning options.

    Happy tinkering! Enjoy your UDR.

  3. #3
    RC poster
    Join Date
    Apr 2018
    Posts
    10
    I use 1M in both the front and center. Works well for me as i want as close to 4 wheel drive as possible.

  4. #4
    RC Racer
    Join Date
    Jun 2018
    Posts
    111

    diff fluid

    Quote Originally Posted by akconcept View Post
    I use 1M in both the front and center. Works well for me as i want as close to 4 wheel drive as possible.
    I put 750k in front......1m in center and rear......open diff.....works amazing.

  5. #5
    RC Qualifier
    Join Date
    Mar 2015
    Posts
    269
    If anyone's interested in locking the front diff, try hot glue.

    I say this because I know Traxxas doesn't offer a spool for the front diff.

    But filling the diff with hot glue works great, and it's reversible. Mine usually comes out easily in one big chunk when I want to remove it.

  6. #6
    RC Competitor
    Join Date
    May 2020
    Posts
    60
    The optional fully assembled
    rear diff. What weight fluid does it come with.

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