I have a 2015 F-250 Lariat 6.7 powerstroke. It has been deleted and tuned. I'm noticing that after a hard acceleration that it blows a blueish white smoke after you let off the throttle. My buddy was traveling behind me and he said that it smelled like oil burning. I am losing a little oil and coolant occasionally, but there is no coolant in my oil. Does anybody have any idea what the problem could be? Thanks in advance.