The oil change intervals you talked about are exactly the same as my dealer's recommendations. 3000 miles on the factory fill, 5000 miles on the 5w-20 dino, and up to 8000 miles if I insisted on using synthetic oil (which the service manager advised against). I plan on doing the first change myself after 1000 miles, using QSAD 5w-20 dino with a wix filter (NAPA gold), running that until 5000 miles on the truck. At that point blending quaker state ultimate durability and the remaining portion of the QSAD dino oil that I have for the next 5000 miles. I plan after that point to use QSUD synthetic 5w-20 and wix filters. I want full synthetic because living in northern Wisconsin, we see -30 F frequently in the winter months. Any thoughts on the above plan or the choice of QSUD vs PUP would be welcome. Thanks