The Mobil 1 M1-206 or the Napa Gold 1522?
It's bolled down to these two filters for my next oil change. Money is not an issue. The plan is to use the thicker German Castol (Gold) 0w30 synthetic in my 2001 5.3 Silverado here in So. Cal. Then follow up with a UOA in 4-5k miles.
With 29k miles...