How do you change the Filter/fluid in a '90 535I? The car has 142K and I do not have any records yet so not sure if it was ever done.

I'm not sure if I should worry about this or not but I'll feel more comfortable if I do so that I do have a exact date and mileage as to when it was done.

Thanks
Vince

BTW: I do have a Bentley but just thought about this question while at work. I'll check later, but figure you guys would give me a head start.

V