Coolant in oil :dunno: - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 06-15-2014, 10:35 AM Thread Starter
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Exclamation Coolant in oil :dunno:

Can a failing oil cooler cause coolant in oil?

John



07 F350 cc/sb Fx4 Lariat
ARP studs, OEM head gaskets, 4" exhaust turbo back 6" tip, egr delete, BPD oil cooler and filtration, sct turner, egde insight monitor, coolant filter, high idle mod, Recon smoked mirror and cab markers
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post #2 of 7 Old 06-15-2014, 10:43 AM
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Coolant in oil :dunno:

Bingo

Edit: I am dyslexic today. Thought you said oil in coolant.
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Last edited by j.mo; 06-15-2014 at 11:08 AM.
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post #3 of 7 Old 06-15-2014, 11:00 AM
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Usually if an oil cooler is leaking internally you will find oil in the cooling system. So, it can possibly be the other way around as well; coolant in the oil. There is a Ford TSB where you replace the oil cooler and egr cooler due to restricted coolant passages in the oil cooler heat exchanger; therefore, causing damage to the egr cooler due to overheating. I see you already have an EGR delete, so I would just consider doing an egr cooler delete also along with replacing the oil cooler. Bullet Proof Diesel has an external oil cooler kit. Another thing is there could be cavitation of the engine front cover behind the coolant pump. Other possible causes are leaking head gaskets or damaged cylinder head.

Last edited by DieselTechKid; 06-15-2014 at 11:27 AM.
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post #4 of 7 Old 06-15-2014, 11:46 AM Thread Starter
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[/QUOTE]Other possible causes are leaking head gaskets or damaged cylinder head.[/QUOTE]

Hope not had hg done last year. Apr studs installed too head checked

John



07 F350 cc/sb Fx4 Lariat
ARP studs, OEM head gaskets, 4" exhaust turbo back 6" tip, egr delete, BPD oil cooler and filtration, sct turner, egde insight monitor, coolant filter, high idle mod, Recon smoked mirror and cab markers
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post #5 of 7 Old 06-15-2014, 12:10 PM
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Hope not had hg done last year. Apr studs installed too head checked[/QUOTE]


I would remove the coolant pump and check the front cover for cavitation. It's the easiest and fastest thing to do as far as tear down and diagnosis goes.
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post #6 of 7 Old 06-15-2014, 12:20 PM Thread Starter
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Quote:
Originally Posted by DieselTechKid View Post
Hope not had hg done last year. Apr studs installed too head checked

I would remove the coolant pump and check the front cover for cavitation. It's the easiest and fastest thing to do as far as tear down and diagnosis goes.[/QUOTE]
Dumd ? But is the coolant pump same as water pump

John



07 F350 cc/sb Fx4 Lariat
ARP studs, OEM head gaskets, 4" exhaust turbo back 6" tip, egr delete, BPD oil cooler and filtration, sct turner, egde insight monitor, coolant filter, high idle mod, Recon smoked mirror and cab markers
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post #7 of 7 Old 06-15-2014, 12:25 PM
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Dumd ? But is the coolant pump same as water pump[/QUOTE]


It sure is! ha
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