fluid questions

[HPIA4v2]

Originally Posted by KDAWG97M3

hey guys not a BMW noob, but maybe a x5..

couple of questions...

i get the debate on the tranny fluid to change or not...not sure there...


but the rear diff fluid...mobile 75-90?? can i put in 75-140 due to some mild towing?? what do we need for my front transfer case? i have 2001 x5 4.4

also thre seems to b a small leak on my transfer case as well?? any ideas?

brakes will be flushed with BMW dot 4

PS looks good..

Green coolant...not good..will get flushed. Any thing i am missing?? thanks for the help.

KDAWG

I use Dextron III for my xfer case. Maybe the trace of fluid is just from last flush.

Yes I always use BMW brake/coolant.
As far as diff, I stick with 75-90 Redline/M1/RP and leave the heavier weight for LSD (limited slip diff) kind, but I doubt it'll do any harm with you go with heavier oil on your X5.

Welcome to the board.