Oil in coolant
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6th Gear
Joined: Jan 2020
Posts: 6
Likes: 3
Oil in coolant
Hey F T E members. It’s been awhile since I have been on the site and need some advice on what would cause oil to be in my coolant. 2006 f250 king ranch
6.0 power stroke. I’m not sure if it’s the oil cooler or head gasket. EGR has been removed years ago. Any advice would be greatly appreciated
6.0 power stroke. I’m not sure if it’s the oil cooler or head gasket. EGR has been removed years ago. Any advice would be greatly appreciated
Logistics Pro
Joined: Jan 2010
Posts: 4,100
Likes: 1,635
Oil in coolant is TYPICALLY a blown head gasket. Could be a cracked oil cooler though. Either way, the truck shouldn't be driven to prevent further damage, and there are non-teardown diagnosis that can be done to try to find the root cause...but it might be a good time to tear down and bulletproof. It IS a nearly 20 year old engine.
Logistics Pro
Joined: Jan 2010
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I have been out of the 6.0 game for a while, but there used to be a kit to relocate the oil cooler out of the engine lifter valley - helped with temperatures, as well as if the cooler ever plugged up it could more easily be R&R'd. I don't recall who made it, but when I discovered I had a partially plugged cooler, if a flush didn't work I was going to buy the kit. A flush got it good enough I didn't feel bad parting ways with the truck because I got an offer I couldn't refuse.
Cargo Master
Joined: Dec 2021
Posts: 2,376
Likes: 992
From: Chambersburg, PA
I have been out of the 6.0 game for a while, but there used to be a kit to relocate the oil cooler out of the engine lifter valley - helped with temperatures, as well as if the cooler ever plugged up it could more easily be R&R'd. I don't recall who made it, but when I discovered I had a partially plugged cooler, if a flush didn't work I was going to buy the kit. A flush got it good enough I didn't feel bad parting ways with the truck because I got an offer I couldn't refuse.
Logistics Pro
Joined: Jan 2010
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But I didn't keep it, so I didn't do it.
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Cargo Master
Joined: Dec 2021
Posts: 2,376
Likes: 992
From: Chambersburg, PA
I think the understanding of the root cause of blocked up oil coolers has made the cost and install effort of the BPD external cooler a bit less necessary. A proper flush and replacing the Ford Gold coolant with Cat ELC will go a long way to keeping the oil coolers clean. The BPD external cooler is not problem free and the install is a bit intense, though once installed so much easier to service. They are very expensive, but then again, OEM Ford coolers are becoming extinct and we are only left with the Chinese version which don’t cool as well. Any remaining stock of the Ford coolers are pricey.
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Laughing Gas
Joined: Aug 2010
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From: Amarillo, TX
See I remember it being actually fairly cheap compared to the labor to change an oil cooler when it went bad again. I wanna say back years ago it was only $600 or so? Not bad for two pieces of billet machining, mounting, and the hosing for it. And to remove it from the lifter valley where it was literally sitting in heat? Worth every penny if you're keeping the truck forever.
But I didn't keep it, so I didn't do it.
But I didn't keep it, so I didn't do it.
Logistics Pro
Joined: Jan 2010
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That very well could be! The system I'm thinking of definitely used the factory cooler, and you could buy it with or without a cooler depending on if you were using your own. I haven't had a 6.0 in almost a decade, so I'm way out of that game now. I do seem to recall when I was looking into it that you had to make sure all hose connections were tight to avoid leaks.
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