Fluids

[nateS4]

Just wondering how many of you have changed your manual trans fluid or rear diff? The dealer made it sound like these are "lifetime" fluids since they don't include these fluids in any of the service intervals. Basically mine has just turned 130k and have the urge to changes those fluids. What do you guys think? TIA

[Rajan147]

changed my trans fluid when the new clutch and fw went in, definetly makes for sharp and more crisper shifts.

[AK1RA07]

Royal Purple in mine at 65K.. diff and trans, No isses there.

Probably put ENEOS in it when I do the clutch/fw.

[nateS4]

Royal Purple in mine at 65K.. diff and trans, No isses there.

Probably put ENEOS in it when I do the clutch/fw.

75w90 in the diff I imagine.

[AK1RA07]

I used that for both.

Transmission:
http://www.audiworld.com/tech/misc32.shtml

Diff:
http://www.audiworld.com/tech/misc33.shtml

[AudiSportB5S4]

Motul MT90, and it really helped in the cold.

[nateS4]

Motul MT90, and it really helped in the cold.

Im in Maryland, its mild here. Usually never gets too cold for that long. It was in the 20s the other day, but it's supposed to be in the 60s tomorrow

[nateS4]

I used that for both.

Transmission:
http://www.audiworld.com/tech/misc32.shtml

Diff:
http://www.audiworld.com/tech/misc33.shtml

Nice pics in the DIY, the ramps on the A4 made me laugh cause mine couldn't do that, but I am lucky enough to work at a garage. I guess 130k is a good time to change fluids, def wouldn't hurt. I might just wait till I do the clutch and just do them both at the same time.

[MacDaddy]

I put redline 75-90 in my rear diff, made it a little quieter.

if you use redline, 75-90 is for rear LSD and open differentials, and 75-90NS is for non LSD rear ends and transmissions.

they also have specialized fluids like MTL for RWD gearboxes and MT-90 for FWD gearboxes. the MT-90 is like the MTL, but designed to properly lubricate a differential aswell.

the main reason i like redline is they have specialized fluids, not just a one size fits all jack of all trades like the other guys.