Quick overview of how to change the oil on my 1999 K2500 with the 5.7L Vortec.

This one owner truck spent most of its 159k miles on a farm doing truck stuff like feeding cattle, hauling hay, pulling campers...etc. I don't know how well it has been maintained so I'm doing a few oil changes after only a few hundred miles on each interval to try and wash out as much sludge as I can.