Coolant flow won't cause cavitation....Aerated coolant will....I think if its watched more closely that we will find out that the coolant flow of this engine is causing aeration and in turn causing cavitation....My is that the coolant is passing a rather sharp edge and causing a bubbling effect in the area of concern and beating the hell out of it....I'm sure we have pics out there of the failures....Does this make any sense to anyone???? Picture this....Diesels vibrate and shake more than gassers, about 2-3 times as much. Aeration happens when coolant seperates from the entrapped oxygen molecules. The O2 molecules start bouncing off of every surface it comes in contact with and acts like ball bearings beating the walls and everything it comes in contact with. I have seen the class 8's 3406,60,N14 and others with cavitation concerns when not treated with the proper amount of a SCA or DCA, easy within 5-6 months after a in-chassis overhaul. We just submitted a claim with IPD for this very concern and was kicked back because the customer didn't add enough to protect the Detroit Series 60. 12853 miles and NO DCA, guess what not warranty....Does Ford add a additive package to their coolant to help with cavitation??????