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84 gleaner n6 coolant in oil

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bleeds orange View Drop Down
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Joined: 11 Sep 2012
Location: mt. vision, ny
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bleeds orange Quote  Post ReplyReply Direct Link To This Post Topic: 84 gleaner n6 coolant in oil
    Posted: 29 Jan 2023 at 8:23pm
Started combine up to jockey equipment around in shed. Noticed that water was dripping out of crankcase tube. Never did it before. Machine has sat since November whenI finished corn. Always checked oil and had no signs of coolant in oil pan. This issue is definitely new since sitting.   So I shut machine off and opened the drain on oil pan and maybe half a cup of coolant came out before oil started flowing. Where should I start to fix this issue.

Thanks cory
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bleeds orange View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bleeds orange Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jan 2023 at 8:27pm
Machine has ran cool on the coolant guage all year. Even today when I started it It was running long enough to move temp guage and it didn't show it was hot. No coolant out of overflow tube either.
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MACK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jan 2023 at 9:34pm
Sounds like sleeve orings. Very Selden find water in oil by sight. They will evaporate water while running In field. Pull breather hose off valve cover. If it looks like snotty milk, your sleeve orings are leaking.                 MACK
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Adam Stratton Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jan 2023 at 9:44pm
Had an L2 do the same thing. I put some stop leak in it and ran it a bit and seemed to stop leaking. Thought all was good till it threw a rod a few hours later. If I had it to do over again I would have tore it down, fixed the oring issue (I assume that was my problem also) and replaced the crank bearings.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jan 2023 at 9:44pm
This is going to be tough to accurately diagnose because it's in a combine. First of all, when you checked the motor oil before starting, you could have a gallon of coolant in the oil and the dipstick will look fine, other than it should have read overfull. Coolant ALWAYS settles to the very bottom, until you start the engine and mix it with the oil. If this was a tractor, we can easily remove the oil pan and connect a radiator tester and pressurize the cooling system and watch to see where the coolant is coming from. If it was mine, it would get parked in a place where I could remove the engine if needed. Then, I would drain the oil and remove both engine oil filters and leave them off. Connect a radiator pump and place 12 psi of pressure and check it every day or three times a day and keep it at 12 psi. If coolant starts dripping from the oil filter base, it's a bad oil cooler. If it drips out of the oil drain hose, it's internal. Leave the drain plug installed to let it collect coolant if there is any and check it by removing the plug each time. Remove the oil fill cap on top of the engine and see if it is clean ?? no shaving cream...because if there is shaving cream, it's been leaking while you were using the engine. No shaving cream means coolant has gotten into the oil while sitting cold. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jan 2023 at 10:15pm
Uncle blew radiator hose in harvest on N5 and got it hot. Cooled replaced and finished. Next summer moving things around oil checked way over full. Was sleeve orings. Put 6 cyl kits and head gaseket on and used it a couple more years before trading.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 30 Jan 2023 at 6:39am
The main thing to remember about antifreeze in the motor oil is, the coolant is terribly destructive to main and rod bearings !!! Get enough of it in there over some time and heavy loads on the engine, and really bad things can happen. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 30 Jan 2023 at 8:25am
Seems to me extreme cold can cause coolant leaks in places that don't normally leak. Hoses, and orings are affected by the extreme cold temps. I call it cold seep! lol!
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 31 Jan 2023 at 8:21am
Unfortunately, you're likely in for a complete engine overhaul. Probably a sleeve seal leaking and a scored piston to boot.
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