what diff oil to use

[lowrider1]

hi guys

i have 325i cab what diff do i need is it Red Line 75W-90 ?

[daimlerman]

Is your diff an LSD or an open one,differing oil requirments...

[lowrider1]

its not a LSD normal open one

[daimlerman]

I use gear oil,85w/90,bought in 5 litre cans from my local motor factor.

Remove the fill plug first,better to have mucky oil than having to turn the car upside down to fill it,when only the drain plud will come out!

[lowrider1]

i checked with opie oils/bmw manual its stating 75w-90 ill probably go with that ...thank you for reply tho appreicate it