OK I give up what the hell is the mandate?

[Bmyetrkg24]

That's incredible cuz on mine I'm not pulling your leg at all when I say I drain mine till not 1 more drop comes out then I put my Rotella t in her and a new filter and by the time I start my truck run for 5 minutes and shut it off to recheck it she's black already some guys say we'll the top of the head and oil cooler hold about a gallon and a half of the old dirty stuff and that's why but idk