OEM differential and transfer case fluids are good for 100,000 miles. Coolant goes 7 years or 150,000 miles. Brake fluid 3 years or 30,000 miles.


I never changed transmission fluid in my 2002 E53, but it was equipped with the GM 5L40-E.

__________________
2016 F15 x35i
2014 F32 428i


2004 E46 325i sold at 123,600 miles
2002 E53 3.0 sold at 388,801 miles
2001 E46 325i sold at 66,000 miles


1970 Firebird Under restoration