"According to GM, it is creating Dexos for the sake of environmental protection, increased product performance and greater ease of product management.
In order to meet both robustness and fuel economy requirements, Dexos will most likely have to manufactured from Group III synthetic base stock and an anti-wear additive containing molybdenum. Group III is a very highly refined petroleum base stock that meets the performance definition of traditional “synthetic” motor oil made from man-made polyalfaolefin (PAO) Group IV base stock. Either way, expect Dexos to be a synthetic motor oil, and expect it to be priced accordingly."
And how is this any different than what is going on with specs at any company anywhere.
People complain about moly???!? We dont see ridiculous prices for high moly oils such as the last iteration of havoline, PYB, we dont see severe price issues with schaeffer's 7000...
Price increases have been tied to raw materials costs, petroleum costs and steel costs, not to a rogue oil spec... API SM and the specs for 5w-20 oils caused as much pressure on inceased prices as anything else... who are we kidding?
This isnt an isolated GM thing... If GM called their spec BMW LL-04, would folks be as up in arms?
Note again what they stated:
"According to GM, it is creating Dexos for the sake of environmental protection, increased product performance and greater ease of product management."
So just like everyones' favorite Honda did... they found that the eco friendly oils that were out there did not meet the protection requirements, and had to put in their own spec.
And what are we finding with 5w-20 oils now?
Guess what, we cannot have our cake and eat it too. If everyone would follow my suggestion that no car needs more than 120hp, then there wouldnt be the draw for super-power-dense engines, CAFE wouldnt be an issue, and API SM would be good enough for >80%.
But we want to mash the go-pedal and go with no regard for physics or mechanical operation... then want 30+ MPG... then want a long warranty included... and then don't want to use a high-quality oil. THings do not practically balance that way.