So here is my sad story for the day: Start the truck this morning and notice a slight ticking sound. I decide it's a lifter and head for the gas station. When I check my oil its over 2 quarts low. Add a couple of quarts, filler up and head to work. By the time I get to work it's pretty obvious it's a rod bearing. The motor has 9K on it and the knock is very light so the question is... Drop the pan and replace the bad bearing or pull it and go through the whole thing?