this was done on a 98.5 30v 5 spd audi a4

it wasnt hard if you can change oil you can do this
you will need a special bit because the drain plug is tamper proof, i got mine at www.germanautoparts.com
it was a bit expensive ($25) but it is needed and it will work on both the drain plug and the filler plug.

first off drive your car around untill the fluid has heated up, this will allow the fluid to drain easier.

jack your car up


here is the special bit, along side the drain plug and fill plug.



un screw the drain plug and wait till all the old fluid has trickled out
heres where the drain plug is, its right on the bottom of the tranny, you cant miss it


replace the drain plug and remove the fill plug
the fill plug is the large bolt in the middle, it is on the drivers side of the gear box near the axel


i used mobil 1 75w90, fully synthetic, this is what the manufactuer reccomends and it took about 3 quarts


you will need some sort of way to get the fluid up in to the filler whole, u used this pump type of thingie, you
can get it at any auto parts store.
pump it full.


the tranny will take more than 3 quarts but this is only because the car is jacked up and at an uneven slant, again only add 3 quarts

as you can see i needed this


and now my shifts are smoother than ever

torque listings

fill plug=18 ft/lbs
drain plug=26 ft/lbs

 

Good write up, Sandman.

Do you know what the service interval is for the change?

 

thanks............ and every 60k miles.

 

very very nicely done,
i would rate this as one of the best posts!
very inspiring too, will have to get that done soon

have you changed the oil in the gear housing on both the axels yet?
i would want to do all 3 in the same day, let us know! im tallying up how much its going to cost for the gear oil

 

i havent done the front or rear only because i want to do them at the same time. right now i have a leak in the rear seal and a new gasket on the way in the mail right now. once that comes i will do the front and rear diff.

as for price of gear oil, i may have been ripped off but i spent $8 a quart spendy i know
so lets do the math
gear box=2.91 quarts
rear diff=2.1 quarts
rear/center diff=.79 quarts

2.91+2.1+.79=5.8 quarts or 6 quarts (cant buy .8 quarts hahah)

6x$8.00= $48.00 DAMN[:@][:@][:@][:@]

hope you can find it cheaper i got mine at autozone and didnt shop around soooo. good luck

 

i Wish you wouldve done this write up a few months ago. i paid $100 for this to be done to my car.. but i feel the diff. especially since i ended up putting a new oem clutch in afterwards. GOOD WORK

 

great right up sandman, this is something i need to do shortly. but i'm a little confused over which to get GL5 or GL4.
is gl4 for the manual transmission gearbox, and gl5 for the final drive? i noticed that sandman used mobil 1, i looked and could only find gl5 in this brand whereas other manufacturers like motul
have a product that is a mixture.
and reccomendations?

 

nice writeup man!!

bentely manual said that the center diff and "front diff" (this is in parenthesis because you cant really see the front diff) shares oil with the tranny

rear diff, has a seperate drain plug, the owners manual tells you waht kind of weight oil to use in the tranny and rear diff

 

One word of advice. Always open the fill plug first.

If you drain your transmission or differential, and find your fill plug is frozen in place,[:@], you are going to have to tow your car to a grage.

 

I heard that it would be better to use a lighter oil than 75-90... any thoughts?

My car doesnt like going into 2nd in the cold. Doesn't like it at all!