2009 ram 3500 CTD/g56 putting engine oil into coolant.

[SRay]

Hello, my friend's work truck, a 430,000 km 2009 Dually wih g56 has started putting engine oil into the coolant. He took the truck to one shop already and they installed a new engine oil cooler. Didn't fix the problem. What other areas can oil get into coolant unless the new cooler is defective?



I know the pressure of the oil has to be higher than coolant pressure to enter the cooling system.



He got the truck sitting at a different shop now. Waiting on what they say is the problem.

 

[sag2]

Is he sure they cleaned all the oil out? Use dish soap and flush many times with the soap then clean water.

 

[SRay]

I forgot to also mention that the truck shuts off when hot.

Sag2: That's possible, will have to see

 

[Joseph Donnelly]

It is difficult to clean all the gasket material when replacing the cooler. That could be the problem. Another possibility is the head gasket.