First of all its great to find a place with so much ( GOOD) information and ACTIVE members. The post title pretty much explains where I,m headed with this. I have a 2002 crewcab SD with 125000 miles on it .I had a major oil loss (10 quarts) Christmas Eve and after reading some of the postings here , I thought it was pretty clear I had some Bad injector o-rings. I pulled the injectors and found two that blew the bottom o-ring out and it was dumping the oil into my fuel system. I,ve changed all of the injector o-rings and now as a bonus the truck is hard to start if it sits for 20 minutes. There is no smoke and the oil pressure gauge doesnt seem to build up until the truck starts to fire up. The oil level is staying up now but is there a place where a piece of the broken o-rings could be stuck letting the oil drain back to the pan ?