skip01b5

Ok so this is probably a dumb question and yes Ive STFA and i havent found it. All ive found is rear diffs and transmissions. Im doing all my fluids this week and I get to the front diff and see the drain plug but where is the fill plug? The only one I saw that may be it is a little bolt on the passenger side of the diff that overhangs in its own little oval shaped lip. I didnt want to fight with it to get it off if it wasnt the right one though so any answers or pictures would be appreciated. Sorry for the dumb question, just trying to do some stuff myself and learn the car. Thanks

Texas Twin T

Have fun.

skip01b5

Thanks, but isnt that just for the transmission? I was under the impression that the front diff and transmission are 2 totally different parts. The front diff is behind the transmission, kinda near the cats? I saw a drain plug there but didnt know about a fill plug.

donromani

nope, connected. They have their own drain plugs, but you can (and should) use the same fill plug on the tranny's driverside face, right by the axle.

Texas Twin T

They are the same,2 spots to drain from but only one spot to fill from.

skip01b5

Ok then, so I bought 4 qts of Mobil 1 75W-90. 2 for the back and 2 for the front. And then 3 qts of Redline MT-90 for the trans. So Im just putting the MT-90 in there when I fill it then? Thanks and sorry

Texas Twin T

If I remember correctly GL4 for the trans and GL5 for the rear diff.

skip01b5

Ok then sounds good. Thanks guys. Im gonna try to finish that up within the next week so we'll see how it goes. I bought one of those cheap pumps from Advance Auto to make it a lil easier.

DAS4

Let me know how it goes. I need to do mine too and have yet to delve into it on the B5 S4. Fill me in with any tips or complications pleaseeeeee!

skip01b5

Will do. Its been storming here so bad lately and everythings flooded so hopefully monday or tuesday il get to it.