So I'm burning tons of oil... Hazy when driving but dumps very large cloud of burnt oil when getting off boost. And after it gets pretty hot, just dumps clouds of white burning smoke while idling. I feel no loss of power, no strange idling or audible difference. yeah... Anyway, I've been through a few different opinions of what it might be: 1) PCV/Catch Can setup (crankcase pressure issue) 2) Turbo seals failed 3) Piston ring/valve seal failure 4) Possibly lifted a head in high boost Just would like some additional input on what it might be. Currently, it's looking like engine issue (piston ring, etc) as it looks like serious blow-by. But here are the symptoms and want to bounce ideas off everyone's head. 1) emptied catch can, was only about 1/4 full. 2) checked catch cans check valves (UPR kit), they are functioning properly. PCV valve is new. Also tested with old one, same issues. 3) checked catch can routing, properly routed. Keep in mind I've had this arrangement for over a year with no changes made. 4) pulled downpipes off, tons of oil on the exhaust/turbine side of both turbos 5) spotless and clean on compressor side of both turbos 6) no oil in turbo outlet tubes into CAC 7) there is quite a bit of oil right in front of the TB plate and into the intake manifold. Weird that its dry before the CAC but drenched afterwards. 8) pulled spark plugs on front bank (4,5,6) and spark plug wells are bone dry, but plugs tips themselves on 4 and 5 are drenched in oil. 6 is only a bit wet. 9) still need to pull plugs from rear bank 10) still need to perform compression and leak down test (gotta grab my tools from work on Monday) 11) checked all turbo drain tubes for obstructions, but found none. 12) no oil in coolant 13) no coolant in oil 14) catch can is now filling up QUICK I am leaning toward a ring or valve seal failure but would that put oil BEFORE the TB plate? If a turbo seal went bad, would it push oil back into the cylinders? I image it would be wet post-turbo, but not pre-turbo. If I lifted a head and stretched headbolts, I imagine I'd see coolant in the oil or vice versa... I am just trying to gather some opinions over the weekend for me to chew on as I can't do compression or leak down until next week when I grab my tools.