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Fleet Management Information for Sweeping Professionals


What You Need to Know About Ultra Low Sulfur Diesel and Emissions Changes

Ultra low sulfur diesel will soon be the norm. Make sure your fleet is ready.

by Jim Larko, principal, Katsam Enterprises, Inc.

The U.S. Enviromental Protection Agency (EPA) has developed regulations to significantly reduce the levels of exhaust emissions in diesel engines. In 2007, the goal of these regulations is to reduce the exhaust levels of NOx (Nitrogen Oxide) by 95 percent and particulate matter by 90 percent.

Additionally, the EPA has implemented new diesel fuel requirements regarding sulfur content to meet the new emission standards. Truck and engine manufacturers are making changes to address the emission standards by developing new engines and exhaust after treatment technologies. Oil companies are also developing new oils to work with the technologies.

First the diesel fuel changes. Terminals must make 15 parts per million, (ppm) Ultra-Low Sulfur Diesel (ULSD) fuel available by September 1, 2006. Many are already pumping this or a mixture. Terminals will not be required to provide both Low Sulfur Diesel (LSD) 500 ppm which is what most currently use, and the ULSD.

All 2007 and newer on-highway diesel equipment will require ULSD. It is very important to know what your supplier is providing to you. By June 1, 2010 all on – road diesel fuel will be 15 ppm sulfur content. The USLD does not have the lubricity qualities of the current low sulfur diesel. You should talk with the supplier to make sure what you are getting at the pump is what you need to protect your engines. Most suppliers are putting in lubricity additives.

What does this mean to you as the end consumer on current equipment?

  • You may see a reduction in your mileage, possibly as much as 4 per cent.
  • Possible fuel system seal leaks. Equipment 1995 and older may have Nitrile rubber or Buna N seals that will dry and crack. Check with your manufacturer.
  • Depending on the type of oil, you may have more frequent oil change intervals.
Changes on 2007 Equipment
  • Lower emissions, via Exhaust gas recirculation (EGR).
  • Maintenance for inspection and cleaning of new DPF hardware (diesel particulate filters), possible hazardous waste by product. Expect dealer charges to dispose.
  • Higher engine oil and coolant temperatures.
  • Higher soot levels.
  • Higher prices.
  • Penalties for non-compliance as high as $32,500 per violation.
How can you prepare for the changes?
  • Consult with your lubricant supplier. Use premium grade oils.
  • Increase focus on oil analysis.
  • Use premium, extended life coolants.
  • Increase and improve preventative maintenance schedules.
  • Know what is going into your vehicles. Don't assume anything.
Chevron Logo

Chevron Oil was a major provider of information for this summary.

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