I replaced the water pump & thermostat about a month ago.
Got the new tank in. Not too hard.
Looks like some stress cracks in the base of the tank.
I reattached the hoses through the engine bay top opening because that way I could be sure they were snug against the plastic plate. The oil filler tube was a pain.
Still find it weird coolant managed to find its way all the way in front of the rear wheels from the trunk. Also, this is probably the most overcomplicated cooling system I've worked on. And I've owned 4 BMWs, lol.
No leaks I can see. The low coolant warning in the tach flashes (the slow flash) for about 10 seconds on startup, but then goes off, though. Even after a few drive cycles. From what I read, the sensor is kind of flaky?