My diesel engine has a lot of miles on it and has not had any problems, so why do I need to consider a fuel conditioner?
by Robert Sanborn on Thu, Aug 10, 2006, who was a member of the STLE Society of Tribologists and Lubrication Engineers for 15 years.
**With today’s mandate of ultra low sulfur diesel fuel by the EPA, it is necessary to use a lubricity additive as well as a heavy detergent. Injector designs are going to multiple port injection for better fuel atomization. With these smaller multiple ports injectors are found to be plugging more frequently than the old injectors. Also, the new fuel is so dry you really need a lubricity agent or you will experience pre-mature fuel pump failure. Fuel pumps are very expensive. **