Quote:
Originally Posted by micvite
You're supposed to use ISTA to do it, it cycles the transfer case solenoids to empty it out completely and will tell you what to do after you fill it and at what temperature and stuff like that.
|
Interesting. I'm not doubting you, but I'm just curious where you got this information. I've never encountered a BMW transfer case that requires cycling solenoids to drain fluid. You can also always replace the same volume you remove, and while it may not be all of it, it would still be beneficial.