Yes Marcussen the pumps will be marked 500 PPM for High sulfer ( farm fuel, off-road - red dyed fuel ) until used up. Actually this all starts in July 06 for the phase in period. The thing to be concerned with is lubrication. The old high sulfur fuels had better lubricating properties because of high ash which contains or I should say traps sulfur compounds. Now, the PhD boys will say I'm full of it ( sulfur in an organic form ) but over thirty years of pulling diesel engines down for rebuilds, the gray looking matter trapped in valleys under the black soot compounds is ash and it's full of sulfur. Here's the EPA rub, these so called pollutants actually lubricated your injectors, HP injection pumps and kept the valve train wear to 1,000,000 mile rebuilds. Now, I'm not going to say your injectors are going a million miles but your valve train would on these high sulfur-ash ladent fuels because of the lubricating properties. The bottom line is whether you chose green dyed taxed fuel or red dyed non-taxed diesel for your tractor, the ULSD will require additives for lubrication until the manufactures run out of the old components requiring sulfur and ash to survive reality and our over populated planet. Hey what do I care, I'm a Jedi....
