My 99' has developed severe blowby problems with high oil consumption in the last month. From what I've read of previous posts it appears I have worn rings. I bought the truck used with 54K miles and the turbo intake was filthy. The OEM filter didn't fit the stock box well and there was plenty of evidence of dust getting past the filter. That being said, beside the rings most likely being shot, what other troubles could I expect to hear about when the truck goes in for an estimate @ Cummins. The engine runs well and has plenty of power. I know the previous owner and have observed that he doesn't seem to ever service his new truck either. I'm hanging onto my wallet and will await any responses. I need a good, hardworking, long lasting engine... ... ... I took a gamble and it appears I've been burned! :{ Thanks!