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Title: to big a risk of not getting water out
Review: I bought one of these and then found out that there is a large risk of not getting all of the water out or not fully circulating the antifreeze. Marine mechanics and the dealers are not recomending this method they recomend to draing the block and fill it with anti freeze. There were cases of cracked engine blocks using this method. I had to return it. I cant take the risk.
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