Does FPC help with the problems experienced by the reduction of sulfur in diesel fuels?
A. The problems reported by the reduction of sulfur in diesel fuels relate to the effects on rubber components like o-rings and gaskets, etc. The ULSD (ultra low sulfur diesel) tends to remove the oils from the O-rings thereby making them brittle. This hardening of the O-ring reduces its sealing capabilities and over time it will fail. FPC does not have any sulfur components but it does have components to increase lubricity in the fuel. As explained in TB-1006 the sulfur content is being reduced from about 500 ppm to 15 ppm. The addition of FPC will add only about 100 ppm of our lubricity agent. While this will certainly help, I am not certain it will solve all the problems. A review of the technical literature points to the addition of about 2% biodiesel to the fuel supply which replaces the lubricity lost by the removal of the sulfur. Studies have shown this to drastically reduce the failure of rubber components. The long term cure is to replace these failing components with Viton co
