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      08-12-2019, 12:55 PM   #124
pbonsalb
Major General
2016
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6,281
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Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

iTrader: (3)

I donít know that you can get enough out of the high mount expansion tank but siphoning it would help reduce the spill when you remove the thermostat. Draining from the radiator drain plug is better.

I try to be neat. Maybe others are just opening up the housing and letting coolant spill out and then hosing down the front of the motor.

Some is going to spill no matter what.