Oil had previously gelled up and I had the oil checked by Blackstone. Seems there is coolant getting into the oil I am just not sure how. Have a leak at the front of the motor around the water pump so I thought that was why I may have a small amount of coolant loss. Oil cooler is 6 years old.

Noticed a few weeks ago truck has oil in antifreeze, just confirmed the other day it's going both ways oil is contaminated as well. From research I've done more than likely oil cooler. I have priced that part, and only comes with o-rings for oil cooler case, and oil cooler itself. Know I will...