Ok so ive had the truck for a few months now. Its my first 6.0 but I've been around these trucks for a long time. Every time I've seen a bad head gasket there was coolant overflow. I don't have any issues with coolant pressure and my coolant is completely to the full level. But I have oil leaking around the base of the head where it bolts up to the block. anybody know whats going on? i think its a head gasket but please tell me if there's anything you know that i might not.