Hey guys I'm new to the X5 M world. I wrench on my own cars all the time, however the X5M has a radically seemingly more complicated cooling system. I was wondering if there were any diy guides for flushing the coolant? I have a new to me 2011 X5M with 41K miles and given its age, I'd like to perform a coolant flush. I just want to know where to drain the two cooling systems, and the refill procedure. I'd rather not spend $150 + coolant at my indy to do the job, when usually its pretty simple to drain and refill.