3.0L Duramax teardown
Interesting video (46 min long) of a teardown of a 3.0L Duramax that failed at 146,000 miles.VIDEO
Forum Discussion
The owner of that truck must have been really ignorant to ignore a low oil warning for that long. I would think that the difference in oil level between a warning light and catastrophic engine failure would be pretty significant. The guy in the video seemed to think that the timing chain tensioner depended on oil pressure to maintain tension, and when oil pressure was lost the chain loosened, resulting in the Mickey Mouse ears permanently imprinted in the top of the pistons. Not sure how that would explain the grenaded rod bearing though. Either way, I guess this is what happens when you never bother changing or even checking the oil.
