Howdy all long time since I last posted, so I did a oil change last October in my F250 (5w40 Valvoline synthetic oil), I did not drive much this winter (health issues) and only put 1800km's on it since that span. However a few days ago, I noticed the oil level had dropped, about 3 and a half quarts to be specific. There was a few rough morning starts from not being plugged in during the wonderful winter that is common up here in north western British Columbia, puff of blue smoke after she started but nothing more. No blue haze out the tailpipe while running nor any leaks or puddles underneath while she was sitting, oil is still clean enough it looks like I poured it in recently.
wondering if anyone can shed some light for me please.
cheers

 

that's a good amount of oil to be loosing that quickly, could be injector o-rings, or bad turbo maybe? you can pop your downpipe off the exhaust side of the turbo and see if it is super oily.