For my final oil on this “sheet”, I used up the Mobil 1 5W-30 in my stash. Oil ran from April 28, 2018-July 22, 2018. Premium fuel/octane and a Fram Ultra filter. Cycle includes a 3,600 mile road trip, the final 945 miles towing in 95-100 degree heat and getting 8mpg. I put the truck in cruise...