We will show you hot to winterize your 5.7L Mercruiser engine. You could use the same process on a 5.7, 4.3, 4.0, and 3.0 Mercury engine. The most important thing is to make sure you drain all the fluid out of the block. Our boat, a 2000 Maxum 2300 SR has a 2000 MY engine in it. Hope you find the video helpful and enjoy it

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