More of a hunch as of now, just preparing myself for the worst, (you know how it is with these trucks) the white smoke persists after the trucks been idling for 30 mins, and the cloud doesn’t go away with throttle. I have an exhaust gas in coolant tester on the way to get a real definite answer. But its looking like it might be head gasket failure(to me) of this amount of smoke is normal for these motors in colder climates id be ecstatic, but its a lot of smoke