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      08-12-2019, 12:55 PM   #124
pbonsalb
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Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

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I don’t 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.
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