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  1. 11-02-2021, 04:32 PM #6
    larry_arizona's Avatar
    larry_arizona
    larry_arizona is offline Senior Member
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    Default Raptor Winterization

    Quote Originally Posted by WildH View Post
    So nobody is pouring RV antifreeze into the water cooling system at all? Just draining the plugs and leaving them go. I live in ND so it gets REALLY cold here.
    I have drained and refilled with marine anti freeze. I just don’t need to use antifreeze anymore. Draining is all I do. 2 boats 4 seasons with a raptor.

    1) not necessary
    2) not all marine antifreeze is good enough
    3) it’s pouring $$$ down the drain

    Trust Indmar when they designed a self draining raw water cooling system. Nowhere in the manual does it suggest marine antifreeze.


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    Last edited by larry_arizona; 11-02-2021 at 04:37 PM.
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