Winterizing with closed cooling

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  • yellj
    • Oct 2011
    • 1

    • Richmond


    Winterizing with closed cooling

    I have the ZR6 with closed cooling, in the past I have drained all the points through the drain kit and the V-drive, then ran pure RV antifreeze through the engine. PCM manual implies that the second step is not necessary, anybody just draining and leaving for the season? TIA
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