Can you add anything to oil to keep the cooler flowing? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 02-08-2010, 12:58 AM Thread Starter
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Can you add anything to oil to keep the cooler flowing?

Is there anything that can be done to get the oil cooler from clogging up besides regular oil and coolant changes?

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post #2 of 4 Old 02-08-2010, 05:55 AM
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No suggestions for the oil, but suggest adding a coolant filter. Almost all oil cooler failures are due to plugging of the cooler's coolant passages due to debris in the coolant. Once the oil cooler plugs it reduces coolant to the EGR cooler, causing it to quickly fail.

The 6.0 has been found to release casting sand from the engine block over time. Some folks find a lot of sand and others just a bit. Just changed my filter on Saturday, and after cutting it open, found approximately 25 to 50 grains of sand after 3000 miles of using the filter (truck has 49K miles).

There are several coolant filter kits on the market, or you can make your own fairly easily. I went with the Diesel Site kit and couldn't be happier.

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post #3 of 4 Old 02-08-2010, 09:32 AM
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Exactly what skanj0 said. It is not the oil that is block it is the coolant side of the cooler that gets blocked.
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post #4 of 4 Old 02-08-2010, 12:31 PM
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