Which way to drain coolant from heater hose ?

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  • unitt01
    E30 Addict
    • Oct 2014
    • 513

    #1

    Which way to drain coolant from heater hose ?

    I currently have the long hose that goes from the thermostat housing to the firewall heater core nipple cracked with a small leak. Currently trying to figure out the best way to drain the coolant so it doesn't remain in that certain hose. Would draining the coolant from the radiator or engine block be the best way ? Or just drain it straight from the hose by loosening the hose clamp ?
    FS: Plug n Play Second Trunk Light !
    My Parts for Sale Thread~

    x 1984 325e 2.7i ~ CastroMotorsport Built x Daily Driven

  • Supratreo
    Advanced Member
    • Aug 2016
    • 135

    #2
    you can just pull the heater hose off and whatever falls out will fall out, they you just have to top it off but if its been a while since you've serviced your cooling system maybe you should just drain the radiator and block and fill it all new.

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    • unitt01
      E30 Addict
      • Oct 2014
      • 513

      #3
      It's actually new since I just did a headgasket rebuild on it. So the coolant barely has about 2000 miles Along with it
      FS: Plug n Play Second Trunk Light !
      My Parts for Sale Thread~

      x 1984 325e 2.7i ~ CastroMotorsport Built x Daily Driven

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      • packratbimmer
        E30 Fanatic
        • Dec 2009
        • 1329

        #4
        Drain it through the radiator and use a paint strainer to filter it if you want to reuse.

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