They are reducing SA .6% to reduce DPF clogging. Is that a problem and how widespread is it??? I don't hear about it from the trucking industry. They used a lot of CJ oil with DPF's. Like to hear from those in the trucking industry.
DPF systems are not anymore a 'problem', but they are a high expense....
to have them, cost of parts, engineering etc.
to maintain them, DPF regen cycles (more fuel burned, lost power, nevermind the idiocy of burning more fuel to burn off the residue of burned fuel)
breakdowns from them and their systems
Anything that can minimize DPF regens etc should be a welcome development.....whether this is it....we'll see i guess.