I use 10w30 bulk, 5w20 shell bottled, mobile 1 10w30 bottled, shell syn-blend 10w30 bottled, shell synthetic 10w30 bottled, motorcraft syn-blend 5w20, and Rotella 15w40 (9 to 10 gallons).

Those are the only ones that I maintain a stocking level on and will r... Login to read more.