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Cal Coon · 11-01-2019, 06:59 PM

I have a mercruiser 350 magnum. I winterize my engine through the earmuffs because I figure it is going to get antifreeze everywhere there was water... I run the engine up to running temp to get the thermostat open on the garden hose. I then drain the riser's and the block of all the (hot) water. Then I put the plugs back in the riser's and the block, and I have a 5 gallon jug that has it's own set of engine ears. I then start the motor back up while running on the engine ears connected to the 5 gallon jug of RV antifreeze. It is gravity fed. I run about 15 gallons through the system, making sure that all I see is "pink" coming out of the exhaust, and just before I run out of antifreeze, I fog it, and stall it out on the fogging oil. I then leave it just like that for the winter. I leave the antifreeze in it. After the motor cools down, I spray it down completely with wd40 silicone to preserve plastic and rubber, and helps to keep critters away. I also dump about a half gallon of antifreeze down the bilge just to mix it with any standing water. I also put a couple of the little buckets of scented "damp rid" in the boat. One in the cockpit area, and one on the floor of the cuddy cabin. That is my annual ritual, as well as changing the gear oil in the outdrive. It is now ready for shrink wrap...

11-01-2019, 06:59 PM	#14
Cal Coon Senior Member Join Date: Apr 2018 Location: Lakes Region Posts: 475 Thanks: 179 Thanked 158 Times in 100 Posts	I have a mercruiser 350 magnum. I winterize my engine through the earmuffs because I figure it is going to get antifreeze everywhere there was water... I run the engine up to running temp to get the thermostat open on the garden hose. I then drain the riser's and the block of all the (hot) water. Then I put the plugs back in the riser's and the block, and I have a 5 gallon jug that has it's own set of engine ears. I then start the motor back up while running on the engine ears connected to the 5 gallon jug of RV antifreeze. It is gravity fed. I run about 15 gallons through the system, making sure that all I see is "pink" coming out of the exhaust, and just before I run out of antifreeze, I fog it, and stall it out on the fogging oil. I then leave it just like that for the winter. I leave the antifreeze in it. After the motor cools down, I spray it down completely with wd40 silicone to preserve plastic and rubber, and helps to keep critters away. I also dump about a half gallon of antifreeze down the bilge just to mix it with any standing water. I also put a couple of the little buckets of scented "damp rid" in the boat. One in the cockpit area, and one on the floor of the cuddy cabin. That is my annual ritual, as well as changing the gear oil in the outdrive. It is now ready for shrink wrap...