Rear diff fluid

[Cody318]

Where is someone supposed to add fluid to the rear diff on an 84 318i? All i could find in my bentley manual was a warning to use only "authorized bmw differential fluid." i have fluid from http://www.bavauto.com/ and am pretty sure its the right stuff, but I cant find where to fill up at. Any suggestions? Thanks.

 

[epj3]

There are two plugs on the rear of your differential. This is from a 1994 325i, but your dif plugs should be in about the same place. IIRC, they are both 16mm or 17mm bolts on the E30.