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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Oil in Radiator?

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Old Apr 19, 2007 | 07:47 PM
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jf350
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Oil in Radiator?

Just checked my radiator fluid and it looked black. I assume this is engine oil. If so, how is it getting in the radiator? Any suggestions? How big a problem is it?
1988 F350 7.3 diesel 5spd Banks turbo.
 
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Old Apr 19, 2007 | 08:11 PM
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eco
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From: The dark carnival
I would consider this a big problem. Is coolant getting into the oil? Coolant breaks down oil quickly.

The only ways that I know of for oil and coolant to mix are head gasket leaks and timing cover gasket leaks. Other than that there are things like cracked head/block etc. but not that common.

And coolant/oil mixtures as I have seen them look more like chocolate milk than black, but thats all subjective.
 
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Old Apr 19, 2007 | 08:53 PM
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Does the Banks turbo have an oil cooler that uses the coolant system? I've seen engine oil get into the radiator with an internal oil cooler failure.
 
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Old Apr 19, 2007 | 09:40 PM
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jf350
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No, the Banks doesn't have a separate cooler. The Banks was installed several years ago. I did change the water pump myself about a year ago. However, I checked things pretty carefully for several months thereafter. There's lots of oil all over the front of the engine so gaskets sounds possible.
 
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