rear diff fluid

[arorem]

I have searched and concluded nothing, what kind of gear oil does audi recommend for a rear diff? Is it 75w90 full syn?

[Blake260]

i used m1 75w90 full syn

[arorem]

cool thats what i have, i do believe it only takes 1.9qt. Ill have to double check. thanks

[djwimbo]

GL5 rated 75/90 or 80/90. Personally I used Lucas b/c I go through about .5qt every 5K b/c my axle seals are leaking. New ones on the way.

[arorem]

that sucks, my driver side is leaking a little bit, nothing big yet. so thats a future project right after my swaybar end links for the front, the bushings are shot to hell.

[djwimbo]

that sucks, my driver side is leaking a little bit, nothing big yet. so thats a future project right after my swaybar end links for the front, the bushings are shot to hell.

Fix it. ECS has diff seals for like $6/ea. When I bought my car only the left/driver's one leaked, now both of them leak. The fortunate part is that I can fix it in class for "open shop" credit.

... Bushing shot is a good sign that you should upgrade the sway bar . They come with new bushings, it's like a sign or something.

[k0mpresd]

i put 2 liters of gear300 in my rear diff.

[P3RryaudiA4]

hey guys just need some help real quick i just finished puttin some diff fluid in and my question is do you wait for it to drain out completely till its not coming out anymore? or do you just fill till it starts coming out then put the drain plug in?

[P3RryaudiA4]

any1 help me out? lol i kno you are supose to fill it to the fill hole or 1.75 lt or w/e but is it bad if ihave too much in there? i mean its not pouring out but if i take the fill plug out right now then it will start to dribble. and when i took it out to begine the fluid change it wasnt doing anything, so should i just let all of it dribble out?

[urban96]

any1 help me out? lol i kno you are supose to fill it to the fill hole or 1.75 lt or w/e but is it bad if ihave too much in there? i mean its not pouring out but if i take the fill plug out right now then it will start to dribble. and when i took it out to begine the fluid change it wasnt doing anything, so should i just let all of it dribble out?

i doubt it would make any difference as long as you dont waaayyyy overfill it somehow


if you have the fill plug removed and fluid isnt GUSHING out itll be fine

[P3RryaudiA4]

ok thanks

[P3RryaudiA4]

if it does make any difference tho ? i mean i already have everythin set up so i can just take it back out and let it dribble out till it doesnt anymore. i just want it to be perfect as im going to be doing some seriouse driving in about a week, 3000 miles about

[P3RryaudiA4]

any ideas?

[4A Play]

So should the diff cover be removed and the gears be sprayed down with brake cleaner like on Jeeps? Or is it good enough to simply replace the fluid?