Differential Gear Oil Change

Discussion in 'Modifications And Maintenance' started by MBOUTBACK, Aug 20, 2010.

  1. MBOUTBACK
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    MBOUTBACK Active Member

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    I have a 2000 Subaru Outback with the 2.5 liter engine. It has 130,000 miles on it

    I'm planning on draining and filling the front and rear diff this weekend and I'm wondering if anyone has suggestions for gear oil.

    I run Royal Purple in my Tacoma, and have been very satisfied.

    What do you think about running the RP 75w90 in my OB diffs?

    Anyone had trouble with the synthetics in their differentials?

    Thanks for the help!

    -Markus
     
    MBOUTBACK, Aug 20, 2010
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  2. pattertj
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    pattertj Member

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    I run synthetic Castrol in my Front and Rear Diff. No issues. OEM fluid is great too.

    Just make sure when you do the rear one that you remove the fill bolt first. Otherwise you might end up in a situation where you can't remove the fill bolt, but have already drained your diff.
     
    pattertj, Aug 20, 2010
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  3. rst
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    rst New Member

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    believe it or not supertech works just fine. i use it in my 02 wrx.
     
    rst, Aug 26, 2010
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  4. PhilSine
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    PhilSine Well-Known Member

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    Running Royal Purple in my 02 WRX diffs; no issues and even felt an improvement in how it shifted after I changed.
     
    PhilSine, Aug 26, 2010
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  5. Threshld1
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    Threshld1 Well-Known Member

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    Extra S
     
    Threshld1, Aug 27, 2010
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  6. phi11
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    phi11 Well-Known Member

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    this!
     
    phi11, Aug 27, 2010
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  7. pksublime
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    pksublime Well-Known Member

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    markus, i even have some extra-s if you haven't done it yet - give me a call
     
    pksublime, Aug 27, 2010
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