Quote:
Originally Posted by Igor_M5
Leaky expansion tank, inevitable. Replace it with a URO brand tank to avoid another cracked one at 20-30k miles. Get the return line as well.
Failed PCV, inevitable. Order a new diaphragm, swap it yourself. https://www.ebay.com/itm/314368493183?
To get yourself one foot ahead, order and replace the Fuel Tank Breather Valve (URO brand as well).
Your next coolant leak will be hard to find, but it’ll be right from underneathe your manifold, a plastic fitting that connects the cylinder head and the upper radiator hose.
You welcome 
Ps, I can assure you the front tension strut control arms need replacing too.
/fellow 2017 540i owner |
Thanks for your insights. I very much appreciate it.