Introducing a new fuel into the fleet does not come without
consequences—especially for maintenance. But, will the
anticipated cons of higher fuel prices, lower lubricity, and
lower energy output outweigh the projected pros of cleaner
emissions and improved air quality once Ultra-Low Sulfur Diesel
(ULSD)-fueled vehicles begin regular maintenance schedules? From
January 1, 2007, all Y2007 and later model year diesel highway
vehicles are required to use Ultra-Low Sulfur (S-15) Diesel
fuel. California mandated use of ULSD for all diesel highway
vehicles as of September 2006. Vehicles that require ULSD fuel
have specific labels on the dashboard and near the fuel inlet
indicating that they must be fueled with ULSD fuel. Vehicles
without these labels may be refueled with either Low Sulfur
Diesel (LSD) or ULSD fuel. Patrick Kelly, downstream associate
with American Petroleum Institute (API) in Washington, D.C.,
explains that the U.S. Environmental Protection Agency (EPA)
sought input from the engine and fuel industr