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  1. #1
    1st Gear

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    Gearbox & Rear Diff

    My 2,8Q has covered 117000 miles with full history, but I can't see if the gearbox oil or rear diff oil has ever been changed. Should I change it and if so what grade oils are required?
    Thanks

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  3. #2
    Bradderz_1988's Avatar
    Dont replace it, Upgrade it !!

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    75w90 fully synthetic for both

    Gearbox is 2.75L iirc

    Rear diff is 1.9L iirc
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  4. #3
    spartacus 68's Avatar
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    Link here for the rear diff. AudiWorld Tech Articles

    I did mine at 110k. Audi service don't have it as part of the service schedule - so don't be surprised if they stare at you blankly! Meant to be sealed for life units... but if you plan on keeping the car for another 100k I think it's worth doing. The oil on my rear diff came out like coffee.

    Plan on getting the transmission oil done during the summer as I've done 132k and plan on keeping the quattro for as long as I can. Link here for 5-speed box (US). B5 5 spd tranny fluid change by Sandman - AudiForums.com
    2002 A2 1.4 TDi SE (125k)
    2001 A4 2.5 TDi Avant Quattro Sport (155k)
    1995 80 TDi Avant SE (175k) Sold

  5. #4
    S4_dan's Avatar
    Fire up the Quattro!

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    Would this be an product to use in term quality?

    Smith & Allan EP 75w/90 Fully Synthetic Gear Oil 5 ltr | eBay

    If my car passes it's mot end of March, then i would be doing an oil change of the diff and gbox.

    Dan
    2002 2.5 V6 Quattro
    Mods Done: Q5 Rear aero wiper. Front ambient light install. Led number plate lens. Towbar with 13pin electrics.
    Mods to complete: Sport shocks to go with Eibach pro springs. Fit 17" 5 star matt black wheels. Fix lack of torque at low revs. Get a custom exhaust system fitted.

  6. #5
    6th Gear

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    definatly worth changing. tiny bits of metal from the odd crunched gears, tho if i remenmber right, these have magnets in the drain bungs to catch stray bits. condensation within the box clouding the oil...... if it hasnt been done by 100k or 10 years, get it done!

  7. #6
    Bradderz_1988's Avatar
    Dont replace it, Upgrade it !!

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    ^^^ that's what I'm going for currently in my watch list till payday arrives lol

    The shell helix racing stuff is around £70 for gear oil that's ridiculous in my eyes unless its mixed with gold then it's a fair price lol
    1999 Audi A4 1.8T Quattro Sport - Volcano Black

    Mods - Frankenturbo F4 Kit - THS Decat - Milltek - ECS Crank Pulley - 034 Snub + Bracket/Gbox Mounts - 1Z/S2 Clutch + Flywheel - 007p - ICM + EVAP Delete - S4 B6 345mm Brakes - 300mm Rear Brakes - Goodridge Hoses - LCR Splitter -S4 Bumbers + Skirts/Mouldings - OEM Xenons - Apikol Diff mounts - Polytek'd Rear Diff Mount
    To do - F21 Upgrade - 3" Maf/Saab red Injectors
    WANTED : Cheap 02/52 Passat 1.8T AWT Manual

  8. #7
    1st Gear

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    Is the gearbox oil, the same oil the torsen center diff runs in. Or is the Torsen a seperates sealed unit.

  9. #8
    "Stick a V8 in it!"

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    its all the same.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  10. #9
    1st Gear

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    Thanks for all the info guys, can you tell me where i can get the tool for the plugs,

  11. #10
    "Stick a V8 in it!"

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    Rear diff is just a 10mm hex.

    Gearbox has a 17mm hex for the fill plug, and a special security spline thing for the drain plug that you'll need to get from ebay or your local tool supplier.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  12. #11
    1st Gear

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    dragging this up agian, sorry ! ,are these the correct style?



    DRAPER EXPERT 63476 - DRAIN PLUG KEY AUDI / VW GEARBOX | eBay

    I ask only as the plug in mine looks as though the dip in the middle of thse is not going to be deep enough??
    As usual , many thanks !
    ChrisG

 

 

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