[11B]

Kind of figured that would throw you. Most desils have a flow tube that alows the engine oil to be blown out of it. It is quite common for the Cat tube to be to short and the overflow oil thrown out cloggs the inside of the radiator which causes it to heat up. I took mine to the Freightliner dealer for repair as I'm not to handy on tools. My suggestion would be to call either a Cat repair shop or Cat themself and chat it over with them as to the location of the tube and the heating up porblem to see if this could be the problem.

Sorry for the confusion.