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  • #16
    Yoda
    Hi Keith

    Agreed that raising & lowering the the front of the trailer helps to drain more of the water from the tanks . . . but, there will still be some in there. (I discovered this when I did my plumbing system rebuild). A potential concern with blowing out the system before introducing antifreeze is that this puts air pockets into the piping which can cause the pump to have increased difficulty pulling antifreeze in from an external jug. I have found that keeping the pump full of water creates the best suction and the antifreeze quickly pushes the water out of the system. I don't blow out the system after the antifreeze because it usually has lubricating additives that helps preserve the seals in the system and diaphragms in the pump.

    For what its worth . . . the factory goes straight from water to antifreeze (in the winter months) without blowing out the lines with air and leaves the system full of antifreeze for shipping.

    Rob
    Cate & Rob
    (with Border Collies Molly & Angel + Kitties Hazel & Elsie)
    2015 Reflection 303RLS
    2022 F350 Diesel CC SB SRW Lariat
    Bayham, Ontario, Canada

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