I am. When I first swapped it, I noticed my EGT's wouldn't cool off as fast as when I was running Rotella T6 5w40 but after some break in time my EGT's drop off just like they use to. Starts great in the cold and warms up a lot faster. Also I don't know if you have a tick or not but it cured my tick problem. I would love to keep running it but the price in Canada for it is ridiculous ($17 a quart!) so I think I'm gonna try Mobil Delvac 5w30 or 0w30 next. Or the Motorcraft 0W30 next... I haven't decided yet lol