OK I give up what the hell is the mandate?

[Bmyetrkg24]

To me rawze is the man for having this site the old motors no problem however I've had this pos 871 for 9 months and while I still cuss the commie who developed this egr junk I decided to call truce and just learn to work on the dam thing but I do not have in site yet so remember that I love to read on here watch rawzes videos and learn and I've hated how dirty my motor oil gets immediately after a change then I was watching rawzes teardown video and got highly ticked off when he said he had 22000 miles on that oil!!!! Mine doesn't go 22 minutes b4 I'm thinking dam I better get me a spare filter! So it got me to reading some more and I know 3 things I need a by pass or spinner preferably I need gear oil for sure and I must know WHAT THE HELL IS THE MANDATE or whatever demandate is?? Lol sorry fellas I didn't need computers on my older trucks so much