rear differential oil chnge?
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This is a discussion on rear differential oil chnge? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; is it needed? if so, how often, how much oil, how does one do it, and anything else you guys ...

  1. #1
    Registered User RexMobbin''s Avatar
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    rear differential oil chnge?

    is it needed? if so, how often, how much oil, how does one do it, and anything else you guys can add will be greatly appreciated. thanks

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  3. #2
    Moderator GV27's Avatar
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    Check the Periodic Maintenance sticky. IIRC the interval is 30k miles, <1qt GL5 75w90 and it's easier than changing the engine oil.

    Just pull the bottom plug to drain and refill through the top one on the back of the diff until it comes up to the top hole. You can get a cheapo gear oil pump at any parts store that will make refilling a bite easier.

    Check the Technical Reference sticky in the Powertrain forum for oil options.
    "Inasmuch as ye have done it to one of the least of these my brethren, ye have done it to me." -Jesus

    1990 Alfa Romeo Spider Veloce
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  4. #3
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    WARNING- don't drain the fluid until you have removed the top plug. I've known several people who have drained their diff only to discover that they can't get the fill plug loose.
    2002 WRX Sedan - 2000 Mazda Miata
    Do us all a favor: work on learning how to drive your car before adding more power. Pretty please.

  5. #4
    Registered User SubieGalRacing's Avatar
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    because i drive my car "hard"
    i drain mine approx every 7k miles
    or... "every other oil change"

    maybe i'm over cautious... very likely...
    but i drive "harder" than the average joe
    and that fluid is black when i flush it

    cheers
    Jamie

  6. #5
    Registered User RexMobbin''s Avatar
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    thanks everybody. the car has to be jacked up for this? probably, wll the oil still drain if on a slope?

  7. #6
    Banned dark_rex's Avatar
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    did mine at 32K (36k service)

    i'm a spirited, 90% hwy driver. just want this thing to last, so i'm regimented on maintenance and service.

    dR

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