Originally Posted By: used_0il
I wonder how long it will take for RDS and M/E to jump on the grade "officially" as one person put it?
That's hard to say, and, noting you comment on Canadian winters, I'd wager that Imperial Oil will have nothing to do with the grade. When it comes to the PCMO side, they don't offer anything heavier than a 10w-30, aside from the Euro and the motorcycle type oils (and perhaps racing lubes). On the HDEO side, they already have the monograde 30, along with two versions each of HDEOs in 10w-30 and 15w-40. Delvac Elite 222 0w-30 and Delvac 1 ESP 5w-40 are already about as cheaply priced as one could ask for, synthetic or conventional.
Beyond that, Delvac 1 ESP 5w-40 and Delvac 1 LE 5w-30 cover just about every modern diesel spec under the sun. The only benefit I could see is as you suggested - if a monograde 30 really wasn't a monograde, and one wanted to be really accurate in labeling. I don't know if they'd want to alienate the loyal monograde customers though, either, even though that segment isn't terribly large.