7010 oil in coolant

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   Hi everyone. 

Ive got oil in the coolant of my 7010. (About at least 1/4 inch floating on top of pail after draining) Ive removed oil cooler and pressurized with homemade hose clamps and such... seems to hold air at least 10 min (if my seal job isnt leaking:) ) 

Am I looking at another head gasket now?   Replaced head gasket 300 hrs ago due to major external leaks. ( outside is dry now.)

Thanks 

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Sonlight0301 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 06 Apr 2017 Location: Ontario Points: 13	Post Options Post Reply Quote Sonlight0301 Report Post Thanks(0) Quote Reply Topic: 7010 oil in coolant Posted: 11 hours 47 minutes ago at 2:49pm
	Hi everyone. Ive got oil in the coolant of my 7010. (About at least 1/4 inch floating on top of pail after draining) Ive removed oil cooler and pressurized with homemade hose clamps and such... seems to hold air at least 10 min (if my seal job isnt leaking:) ) Am I looking at another head gasket now? Replaced head gasket 300 hrs ago due to major external leaks. ( outside is dry now.) Thanks

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Sids Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 16 Feb 2025 Location: belleville, ks Points: 11	Post Options Post Reply Quote Sids Report Post Thanks(0) Quote Reply Posted: 11 hours 11 minutes ago at 3:25pm
	It is almost certainly the oil cooler. Pressure it on the oil side and submerge in hot water.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 22270	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 3 hours 40 minutes ago at 10:56pm
	Is or was the radiator low on coolant?? If the tractor has been sitting for a day or two, loosen the oil drain plug on the pan to the very last thread and see if any coolant comes out. In 50 years, I have seen ONE failed oil cooler, and it was on an 8050 tractor. I have never seen a head gasket do as you say either. BUT, I have seen dozens and dozens of failed cylinder sleeve Orings that always put coolant in the oil pan and SOMETIMES they also manage to get engine oil into the cooling system. Proper diagnosis is key, and that involves dropping the oil pan first (with the cooling system intact and full of coolant) and pressurizing the cooling system to 12 psi (hand testing pump) and waiting to see where the coolant comes from. Sometimes I have had to plug in the block heater to warm things up to make it leak. If you do this, you will need to monitor the pressure because it can go over 12 psi and then you fix the radiator too. Any signs of shaving creme looking gook on the inside of oil fill cap or snot dripping from the breather hose is 100% for sure you have coolant in the oil.