6.0 oil cooler failure - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 03-02-2006, 03:23 PM   #1 (permalink)
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6.0 oil cooler failure

Well one of the 6 liters lost an oil cooler. It filled the coolant with oil and it mixed into a brown thick mess. The dealer has been flushing it for 8 hours and still can't get it cleaned up. They have some Ford approved flush just for this. It has so much crap in it the heater core gets plugged up. They flush out the heater core and then drive the truck, a big chunk finds it's way to the heater core and it's plugged again.

Wonder what the EGR cooler and new oil cooler are doing???


I took a look at it apart, the stuff sit in the heater hose for a week hanging vertical and wouldn't drip out. If the block is full of it they'll never get it out.

I've seen a lot of other diesels get oil in the water but never like this. Just one more problem on this 6 liter to go with EGR valves and injectors.
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Old 03-03-2006, 04:12 PM   #2 (permalink)
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Re: 6.0 oil cooler failure

Another day and they can't get it flushed out. Now it gets a new heater core and they'll try again.
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Old 03-04-2006, 03:20 AM   #3 (permalink)
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Re: 6.0 oil cooler failure

I have no idea where you are located.... allowing the "pudding" in the cooling system to freeze can make clean up more difficult but not to the point where heater core replacement is necessary.

We are now using Simple Green cleaner during the flushing process and it works very well. After each thermocycle we drain the degas bottle before draining the cooling system to avoid redistributing oil through the system.

Simple Green seems to work very well at emulsifying the oil into the water during the flushing process.... much better than dishwashing liquids....
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