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Old 11-08-2018, 09:20 AM
Bmize Bmize is offline
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Boat: 2017 X23 6000 GDI
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6000 GDI Winterization Question

I followed the procedure in the manual for draining the water from the hose attached to the sea pump. The bolt was marked in yellow but there are other bolts on both sides of engine and one on heat exchanger marked yellow also. Can someone confirm that the other bolts would drain antifreeze from the engine if removed? Thanks
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Old 11-08-2018, 09:54 AM
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Mastercraftdave Mastercraftdave is online now
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For the closed cooling engines, there are is a brass Zinc fitting on both the engine heat exchanger and oil/transmission heat exchanger that needs to be removed so they can drain.
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Old 11-08-2018, 09:16 PM
Bmize Bmize is offline
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Any insight into why the manual doesn’t cover this for GDI engines? I used the flush valve to pump glycol into the engine that’s supposed to fill all raw water volumes.
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Old 11-20-2018, 11:43 PM
Mastiff mastercraft Mastiff mastercraft is offline
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So the passive method with removing the exhaust hoses doesn't work well? How did you guys get a pressurized system? Also are there more plugs to remove besides the one from the sea pump(which was not a quick disconnect), the anodes on both sides of the block, the one srom what I believe is the transmission cooler. Also do you guys change your transmission oil every year? I have the 5500 GDI and am trying this for the first time! How much antifreeze did you guys use? I'm in the middle of this process oil changed ballast drained, water drained but no antifreeze yet. Please help a brother out!!!
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Old 11-21-2018, 08:27 PM
Bmize Bmize is offline
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I used an electric Ryobi pump I found at Home Depot to pump the glycol into flush valve. I drained what little water out of the hose with the yellow bolt running underneath the sea pump. I basically followed the exact directions from the manual for GDI engines. After reading some posts and getting different answers about draining the other yellow colored bolts I decided to open those as well to see what would come out. What came out was the glycol I had just pumped into the engine so I repeated the process of pumping glycol back into the engine. I used the same pump to pump RV antifreeze into the ballast vents and ran the pumps on empty with the bridge connectors on to get fluid into the pumps.
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