Talked with my engine builder and he suggested using brad penn 10w-30. I used the brad penn breakin oil yet had switched to rotella after first 500 miles. He also suggested increasing the preload of the lifters, 1/4 turn of adjusters. I have the comp cams pro magnum rockers which are adjustable. Going to adjust the rocker 1/4 turn, button it up, warm it up and do the oil change