I’m running full synthetic 5w30 since I went to the high flow/pressure oil pump when I replaced the roller followers, lash adjusters, timing chains/gears/guides, and the VCT components at 100k. My last oil change, the dealership in Hagerstown, MD put in 5w20, contrary to my request, and I had to add 1qt at every other fuel fill up. I’m at the dealership in Chambersburg, PA right now getting the oil changed and specified full synthetic 5w30. I’ll see if my oil consumption goes back to about 1qt per 1k miles.