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John Deere Tractors Discussion Forum
:

JD MT coolant in the oil

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Nick167

03-24-2020 17:59:53




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I have a MT that started getting coolant in the oil it was never hot and had antifreeze in it so I m pretty sure nothing is cracked I m thinking maybe a head gasket or are these a wet sleeve engine? The tractor sat for years before I bought it I got it running but it didn t start doing this til a couple months later




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Resting Relics 1

03-25-2020 06:45:26




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 Re: JD MT coolant in the oil in reply to Nick167, 03-24-2020 17:59:53  
Nick, I had a 40 tractor, which uses the same engine, start losing coolant all of a sudden. Pulled down the pan and found coolant seeping down number one cylinder. I pulled the head off and found one of the coolant ports where the head gasket has a rolled edge blown out. I replaced the head gasket and all is fine. The only thing I can think of is the head bolts became loose or the gasket compressed over time and allowed compression to push out that spot. Good Luck!
John

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Russ from MN

03-25-2020 06:35:16




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 Re: JD MT coolant in the oil in reply to Nick167, 03-24-2020 17:59:53  
Drain the ant-freeze, put in straight water and some stop leak, after it seals up put the anti-freeze back in. We had an M that leaked a little, worked for me!



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Mike M

03-25-2020 04:55:32




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 Re: JD MT coolant in the oil in reply to Nick167, 03-24-2020 17:59:53  
No sleeves , but those are really prone to cracked heads and blocks.



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baker

03-25-2020 15:27:31




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 Re: JD MT coolant in the oil in reply to Mike M, 03-25-2020 04:55:32  
As Mike stated bad for heads and blocks.We sale more heads and radiators for the none water pump models that all the others put together



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lfnel

03-25-2020 05:44:36




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 Re: JD MT coolant in the oil in reply to Mike M, 03-25-2020 04:55:32  
I guess my experience was different concerning cracked heads and blocks, even though the temperature sensor is located where they always indicate hot. As a kid we farmed with two MT's. They gots lots & lots of hours, summer & winter for many years. I don't remember a single incident of a cracked head nor block. But I do remember plowing day after day, pulling her really hard, radiator boiling, stopping every round at the irrigation ditch and topping the radiator off with water.

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M-MAN

03-25-2020 02:31:45




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 Re: JD MT coolant in the oil in reply to Nick167, 03-24-2020 17:59:53  
No sleeves.



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Nick167

03-25-2020 18:28:22




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 Re: JD MT coolant in the oil in reply to M-MAN, 03-25-2020 02:31:45  
Thanks everyone hopefully this summer Il have time I can pull the head off and replace the gasket and see if I see any cracks.



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