[88Racing]

Originally Posted by dplummer87

Yeah the diesel pumps around here all say...(This diesel fuel is "ultra low sulfer highway diesel" or something like that...Our 07 likes it, but our 99 seemed to run better on the "dirty" stuff...Whats up with that lol?

DJ Soutthpaw may have a better grasp on this. But if you would like to compare it to leaded and unleaded gas. Here it goes: when unleaded hit the market in the 70's a lot of cars from then and on back started to experience head problems(valve seats and valves) due to overheating. Well they took away the lead that acted as a lubricant for those parts. So maybe sulfur and some of the other chemicals due to the reduction of them the same thing is happening in diesels. Have you noticed in the last 3 years they want diesels to burn hotter to get rid of more of the byproduct junk. That's on the exhaust end.