06 6.0 with 65k miles. No issues but I have a EGR delete to install and I'm going to do the oil cooler while I'm at it. Truck is a work truck that tows and snow plows so I'll need the cold weather package for sure. Other than cost, what is the advantage/dis atvantage of using the stock oil filter set up? What is the difference from the standard duty/heavy duty? I see there are 4 options on their website.