I would have to speculate along with Johnny that this is purely marketing, and that the m1 turbo diesel oil will more than likely be repackaged d1.
I think it could be a little premature for you guys to all be freaking out and ****ing mobil - as the original poster said - who knows if this letter is official or not. I'm going to wait to reserve judgement, and assume that whatever this new m1 turbo diesel oil is, it will not be a step down in quality from their current t&suv/d1...
Well I guess some people will buy it for what it's worth, and some will only buy it if it's a bargain; to each their own. Who knows where they will price it..
I just got back from walmart a few mins ago - went to pick up a few things and decided to go to automotive. They had 9 five-quart jugs of t&suv and a ton of quarts..Looks like at least some stores still have supply..