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2015 Viking VI, 4" Portals
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Discussion Starter #1
I have a 2015 Viking VI and I am baffled at this point. Long story short it overheated, replaced fan, thermostat, and radiator hose and noticed getting coolant in the oil.. Ended up having a warped head. I had the head shaved, new gaskets and after 6 oil changes still coolant in the oil. Any technical would be appreciated. What else could it be or what could I try. I have ordered water pump rebuild kit doing that Tuesday. Thanks in advance.
 

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How much coolant is in the oil?
 

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If you're sure the head gasket is good I'd say water pump seals. Been there, done that...
 
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You'll have to wait and see if the water pump kit fixes it then.
 

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2015 Viking VI, 4" Portals
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Discussion Starter #6
Rebuilt the water pump and still seems like a little coolant coming in the oil, but not very much at all. I will run it pretty hard over the weekend and change the oil again and see. Could there be some residual coolant taking a few changes to get completely out of the engine?
 

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2020 Yamaha Viking EPS
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I would think one or two oil changes would be sufficient to get all the oil out if there are no more leaks getting in.
 

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Get it relly hot, that will boil a lot off, then change the oil before it cools down.
 

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2015 Viking VI, 4" Portals
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Discussion Starter #9
Well found where it was leaking, pressure tested the whole cooling system and cracked below where the cam goes through the head, have the parts ordered and doing a radiator relocate kit now. Hopefully no more issues after this.

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