New oils with less ZDDP.

That is a modern oil..fleet deisel oil is for older models, HD trucks, that kind of stuff. The requirements they mention there are for things like VW TDI, small passenger deisels that were becoming popular before that fuel went $2.80/gallon. The oils I am referring to dont have the API starburst rating. This is off an Advanced Auto Parts site..I googled api oil rating...and landed here first..It sums it up well. I can tfind on a manufacturers site what additives were added or deleted for each rating, but it does reference that deisel oils have a seperate rating system...
http://www.advanceautoparts.com/english/youcan/html/ccr/ccr20030901og.html