Pennzoil Ultra – 55 runs autox, 3,436mi. 6,463 miles on the car total – 5/29/2014 date of change

Z-ROD 10w30 in. This oil is thicker than most 30weight oils, and IMO what anyone who is running 0w40 should be running. Will flow better than 0w40 in the cold, and protect as well if not better in racing/hot. Will put it to the test next.