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Thread: S4 gearbox oil?

  1. #1
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    S4 gearbox oil?

    Does anyone know what oil should be in a s4 6 speed and diff? and what about the rear diff?
    I know these arn't really service items but i've come from the world of evo's where you have to change them every 2 miles so i'm kinda in the habbit of over servicing cars.
    '99 noggy blue S4 / '84 mk1 Astra GTE turbo

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  3. #2
    Broken Byzan's Avatar
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    75/90 full synth i just put in my 6 speed. Its a millers oil i used and they are known to be good( should be @ 10 per litre,lol )

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    smitch's Avatar
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    Not sure about the best oil for Audis but i put some Swepco gdearbox oil in my old '77 911 and it transformed the clunky old 915 gearbox.
    S4.

  5. #4
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    You need 75w90 fully synthetic. The manufacturer specifies GL4 but you will probably
    be better off with GL 4/5 (note, NOT plain GL5 as the EVP additives in GL5 will eat your
    synchros). I've hear good things about Millers CRX. However, a lot of places will tell you
    to just go OEM. Speak to someone like MRC and see what they recommend.
    MY2000 Audi S4
    Ebony Pearl
    CXRacing FMIC
    RS4 Downpipes
    RS4 brakes
    Miltek Dual
    Vogtland CO
    K04's
    Lowered CR & MRC Magic......
    (RS4 ICs 4 sale - check classifed)

  6. #5
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    I used millers CRX in my Evo and found it to be good, but to be honest for the sake of messing about finding one which will do the job I may as well just buy the OEM stuff, just as well I get trade at 12+ vat per litre tho !
    '99 noggy blue S4 / '84 mk1 Astra GTE turbo

 

 

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