What is the process to bleed B48 coolant system

buster-riley · 11-22-2018, 09:29 AM

I got the low coolant code added mucho distilled and would like to bleed it. I have a service appointment but it is way out. I assume this is easy for an old man with arthritis. Thx

Billfitz · 11-22-2018, 09:42 AM

Unless the B48 is different from the N20 there is no radiator drain cock, the only way to drain it is by pulling a hose. You can double check here: https://www.newtis.info/tisv2/a/en/

If you just need to increase the % of anti-freeze wait until the wife is done with the turkey baster today, then use it to draw down the level in the coolant overflow tank. Then fill with straight anti-freeze. After a week or so of driving check the coolant protection with a tester you can get at any auto supply store or Walmart. Clean the baster well, ethylene glycol is poisonous.

11-22-2018, 09:29 AM	#1
buster-riley Enlisted Member 26 Rep 44 Posts Drives: 2016 m235i 6MT no sunroof Join Date: Feb 2015 Location: Minnesota,USA iTrader: (0)	What is the process to bleed B48 coolant system I got the low coolant code added mucho distilled and would like to bleed it. I have a service appointment but it is way out. I assume this is easy for an old man with arthritis. Thx
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11-22-2018, 09:42 AM	#2
Billfitz Lieutenant General 8225 Rep 16,063 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Unless the B48 is different from the N20 there is no radiator drain cock, the only way to drain it is by pulling a hose. You can double check here: https://www.newtis.info/tisv2/a/en/ If you just need to increase the % of anti-freeze wait until the wife is done with the turkey baster today, then use it to draw down the level in the coolant overflow tank. Then fill with straight anti-freeze. After a week or so of driving check the coolant protection with a tester you can get at any auto supply store or Walmart. Clean the baster well, ethylene glycol is poisonous.
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