A long read, the collective knowledge on BITOG is fairly high, this will matter to people on here. Weak timing chains are stretching and taking out the water pump bearing. Since the water pump is so stupidly placed within the oiling system on certain engines (not trucks fortunately) antifreeze can get into the oil. Doesn't seem to a common problem, yet. I was unaware of the weaker chains in the 2010 models.
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3758921/1
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3758921/1
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