More discussion at this link.
http://www.tractorbynet.com/forums/oil-fuel-lubricants/284226-diesel-fuel-additive-yanmar-engine.html
I've seen a copy of the official request from Cummins, Navistar, et al (EMA) for the 460 micron wear scar limit - that's what Canada went with for ULSD. At the risk of understating the obvious, Big Oil has better lobbyists in Washington than the EMA, so the USA ended up at 520 micron ULSD mandated. That 1 page EMA request document is public, I may have it on another machine, or it may be floating around here on TBN already.
Attached pdf gives some background.
Rgds, D.
http://www.tractorbynet.com/forums/oil-fuel-lubricants/284226-diesel-fuel-additive-yanmar-engine.html
I've seen a copy of the official request from Cummins, Navistar, et al (EMA) for the 460 micron wear scar limit - that's what Canada went with for ULSD. At the risk of understating the obvious, Big Oil has better lobbyists in Washington than the EMA, so the USA ended up at 520 micron ULSD mandated. That 1 page EMA request document is public, I may have it on another machine, or it may be floating around here on TBN already.
Attached pdf gives some background.
Rgds, D.