btfarm
America First!
If I was going to synthetic I would have gone with the Rotella T6I'm going back to ROTELLA once I use up the MOBIL 1 I got. I run the 5W40 synthetic, and the ROTELLA held better hot idle oil pressure, and seemed to start better when cold. And I didn't have the typewriter tick with the ROTELLA T6, but it sure ticks with the MOBIL 1.