Can the oil cooler be cleaned? - Dodge Cummins Diesel Forum
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post #1 of 7 (permalink) Old 04-08-2006, 03:39 PM Thread Starter
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Can the oil cooler be cleaned?

1990 Dodge Cummins 5.9 (6BT engine)

Can the oil cooler be cleaned or does this part have to be replaced?

I'm concerned about oil pressure and oil temperature.


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post #2 of 7 (permalink) Old 04-09-2006, 11:45 AM
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Dean, my understanding is that the oil cooler should not need to be cleaned. It will be cleaned during normal cooling system maintainence. The oil side will be cleaned whenever you change the oil. Are you having some problems with oil temps? The cooler should also have enough flow that you should not need to worry about the volume. The only real problem I have read with the oil cooler is they can and sometimes do spring a leak. If that happens then the radiator will fill with oil.
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post #3 of 7 (permalink) Old 04-09-2006, 11:54 AM
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if you want to clean it then get oitl system cleaner and run it through for like 20 minutes then change your oil

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post #4 of 7 (permalink) Old 04-10-2006, 11:54 PM
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monter truck,

what is this oitl? never heard of it.

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post #5 of 7 (permalink) Old 04-15-2006, 06:49 PM
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lol he meant to say oil hehehe

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post #6 of 7 (permalink) Old 02-19-2007, 10:27 AM
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Where is the oil cooler?

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post #7 of 7 (permalink) Old 02-19-2007, 11:50 AM Thread Starter
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The oil cooler is located behind or underneath the oil filter. If you remove the oil filter you will be able to see the cooler. It is a long narrow unit that extends from the top of the oil filter (behind the filter mount) to just above the motor mount. It fits into a recess in the engine block.

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