Procedure for Coolant flush
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Northstar Engines and System Technical Discussion Discussion, Procedure for Coolant flush in Cadillac Engine Technical Discussion; Is there any procedure for flushing the coolant on a 99 North*. Just wanna make sure I dont run into ...
  1. #1
    fristim is offline Cadillac Owners Fanatic
    Automobile(s): 98 Concours 212,000 orginal motor,trans
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    Procedure for Coolant flush

    Is there any procedure for flushing the coolant on a 99 North*. Just wanna make sure I dont run into vapor lock or anything. Thanks in advance!!

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Procedure for Coolant flush

    You can't vapor lock it. It is self purging so it will clear any air in the system. Just check the level after you drive it the first time in case it has gone down a little.

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