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    #1

    Diff oil recommendations

    Just wondering what you guys think about the diff oil with "FM Booster" that is available as an additive/alternative to the standard Castrol SAF-XJ 75W140.

    I have read that it quietens down noisy diffs but a the cost of accelerated wear and possibly different LSD action....

    Thoughts?
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    #2
    Originally posted by estoril
    Just wondering what you guys think about the diff oil with "FM Booster" that is available as an additive/alternative to the standard Castrol SAF-XJ 75W140.

    I have read that it quietens down noisy diffs but a the cost of accelerated wear and possibly different LSD action....

    Thoughts?

    just had this added to the Castrol gloop on an Insp2

    early days as I've only done 200 miles

    Bartlett recommended it.

    Comment

      #3
      Originally posted by cslsuperfan View Post
      just had this added to the Castrol gloop on an Insp2

      early days as I've only done 200 miles

      Bartlett recommended it.
      How many miles has your car done and was/is the diff noisy?

      Comment

        #4
        Originally posted by estoril View Post
        How many miles has your car done and was/is the diff noisy?
        60K on the original diff

        plumbed for it as the back of the car has been stripped to accommodate the cage and the diff noise is more noticeable.

        diff was given a clean bill of health.

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