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Winterize Antifreeze Drain or not


Pm22

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Looking for advise on leaving antifreeze in the v-drive system or drain it after winterized. 
 

Located in Colorado (dry climate) and most shops say drain and leave plugs out “air doesn’t freeze” and it’s so dry here we don’t have to worry much about corrosion over winter. Most don’t run antifreeze through it but some do.  My experience is with previous boats that were I/O and I’d run antifreeze through the block and drive them fully drain. 
 

First V-drive closed system. 2018-VLX21 w/410 Raptor. Thx. 

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Air don't freeze. Pull 4 or was it 5, blue plastic plugs and your impeller cover. Run ballast pumps while front of boat is tilted as high as you can get it. Done! Don't think manual even calls for antifreeze. I don't use antifreeze any more. Same motor and drive you got.

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9 hours ago, BigE said:

Antifreeze will keep the water jacket from rusting. 

Provided, of course, that you use antifreeze with rust inhibitors in it.

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