Last I knew, K1 & K2 were still exempt from the ULSD requirement so they may be 500 ppm S in some places. D1 & D2 are the same as K1 and K2 respectively, I believe except for added lubricants, dye and now the Sulfur load. In the winter, D2 is cut with D1 to lower the gelling point here which also lowers the mpg by 2. Those that religously track their mileage kinow what I am mean. One guy even has a summer/winter tracking on fuelly. Hard core

.
I know the 500 PPM stuff was good for olders vehicles but I've always thought our engines were made for ULSD and choked on the strong stuff.
B2
_________________
2005 CRD Sport - "Blackie"
Tow Package
Trac Loc
GDE EcoTune w/ unl torque
Goodyear Wrangler SilentArmor Tires
over 192,000+ miles
100k mile service performed
5V Glow Plugs Installed and ECM updated
