93 cooling system full of oil. need oil cooler advice??

[Mbschmidt]

93 d250 four wheel drive. driving and heater quit. **** it off and oil was very low in engine but now antifreeze in engine. popped radiator cap, and its all full of oil. i presume its the oil cooler on the side of the block. should i replace with a new one, or replace with a used one, or try to reseal the original one and pressure test the system. also, where to get a new one if i need it, and what kinda seals and stuff do i need and where should i purchase them also. thanks so much in advance and have a good day.

 

[Mbschmidt]

a few typos. sorry. shut it off and oil level was very low in the engine, but there is NO antifreeze in the oil. apologize for the confusion. thanks

 

[dpuckett]

Since the engine oil runs a higher pressure than the cooling system, it stands to reason that the oil cooler could be the culprit. Most of the time, it's just the seal between the cooler and block, but it wouldnt hurt to price a new one.



Daniel

 

[JLEONARD]

Yes as Daniel said if it were me I would pull the cooler and inspect. Perhaps only the gasket is bad.

Based on what you find try to get the parts from Cummins.

 

[rhabla99]

oil cooler

I may have one if you are interested, very low miles on it. I had a similar problem a few years ago,Thought is was the oil cooler ended up being a cracked block. I'll have to look for it,packed it away a couple years ago.