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how much coolant will come out if I pull the thermostat?

Discussion in '80-Series Tech' started by whodat, Jun 28, 2005.

  1. whodat

    whodat

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    4 mos ago I did the coolant, should've but didn't do the thermostat. How much coolant will come out if I change the t-stat without draining? :confused:

    wd
     
  2. Trunk Monkey

    Trunk Monkey Moderator

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    Did the same thing on my 60. Don't know how similar it will be, but on the 60 it was about a gallon. It also created a ton of air pockets and was a pain to burp afterwards.
     
  3. e9999

    e9999 You want to do what...? Moderator

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    a fair amount of the block coolant, some of the heaters, half of the rad?
    look at the vertical position and the hoses...
    sorry no clear number
     
  4. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

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    A whole lot will come out, at least half. Drain the radiator into a clean container and put the same stuff back in after you finish. You will lose some so you will need to top it off.