I can tell you this much about the topic of cleaner diesel. Back in about 1995, California went to a very low polluting low sulphur (no sulphur?)formula of diesel. At first the only thing we noticed about it was the extra cost of the fuel, which, by the way, is $1.49/gal.as I write. (not the red fuel) It wasn't long before the trucking companys had engine failures, or should I say, injection pump failures. Apparently, the lessened lubricating quality in the fuel was compromising the O rings that were already on their last legs. For about a year, stories continued croping up about this problem, and its associated costs. I havent read about these failure story now for years. Stanadyne makes an additive for all diesels that corrects the problem with the "new California diesel" by restoring the lubricating qualities. It does other things as well, it become a hot item to have when this new fuel hit. To me, here in CA, the diesels I see on the road today run so much cleaner, but not necessarily as a result of the fuel, but rather from improved combustion techniques. Fords PowerStroke is computer controlled, adjusting fuel amounts for altitude, temperature, RPM, etc. Cummins I believe, in addition to adding 2 more valves per cylinder, increased pump pressures to better atomize the fuel. The big trucks as well as the light trucks like Ford and Dodge, have decreased emissions demonstrably. I no longer see the soot pouring out of diesels like I once saw. Buses in this state are converting to LPG in the cities. In the end, I believe the biggest thing this new diesel will do is cost you more. Isn't that nice! Rat...
JimBin, I noticed in the KUBOTA brochure that it is the first diesel engine manufactuer to meet the CARB (California Air Resources Board) requirements. Where do the New Holland compacts stand on this, oh, thats right, they don't make their engines, never mind.
