And vice versa. There's only so many ways to get actual oil wether its oil itself or oil residue in the engine. The valve seals, but imo that would just smoke after a stop light or when you first start it but would dissipate as soon as its burnt off. The pcv could be a culprit, I remember about a week ago I though I blew my turbo(s) but one of the lines to my catch can was pinched. Which makes me think if leaky valve seals will cause a momentary smoking until burnt off, than that means you must have a pretty steady flow if indeed it is a oil leak. I'm sure you have already checked your pcv but give it a go bro. Hope this helps out. Enjoy your weekend