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Cenex Roadmaster XL®

A more efficient fleet starts with the best diesel in the tank.

Treat your engine right, treat it with the best

Today’s diesel engines use high-pressure, common-rail (HPCR) direct-injection technology for significantly greater efficiency than conventional diesel engines. The high temperature and pressure these engines operate at can literally cook typical #2 diesel, resulting in fouled fuel that can damage engine parts.

Cenex Roadmaster XL has been enhanced to provide optimal performance for high-tech engines, including those that will need to meet the upcoming Tier IV Final EPA emission standards in 2014. A unique combination of seven additives shows that the new formulation prevents injector fouling and filter plugging to minimize costly downtime.

Compared to typical untreated #2 diesel fuel, CENEX ROADMASTER XL

  • Reduces Downtime

    and costly repairs

  • Improves Fuel Economy

    by as much as 5 percent

  • Increases Power

    by up to 4.5 percent

  • Boosts Lubricity

    by 10 to 15 percent

  • Extends Life

    of injectors and injector pumps

  • Provides Quicker, More Efficient Starts

    with a higher cetane number (typically 47-49)

  • Reduces Maintenance Costs

  • Cleans Up And Prevents Injector Fouling

    in 2007 and newer engines

  1. A Better Choice
  2. Performance
  3. Value
  4. Fuel Efficiency
  5. Gana Trucking

Fuel injector deposits

Internal diesel injector components within HPCR engines are much smaller, lighter and more intricate than direct-injection diesel engines manufactured prior to 2007. With injection that occurs multiple times per combustion cycle at engine pressures up to 35,000 PSI, even the smallest deposit can cause issues within the tight tolerances of the injector (typically 1–3 microns). When using typical #2 diesel fuel, conventional deposits occur in the injector nozzle tip and internal diesel injector deposits (IDID) form deep inside the injector components.

Injector nozzles spray microscopic fuel droplets and become clogged by the smallest deposits. Even a stain or varnish clog can lead to decreased power and fuel efficiency. Minimizing all deposits is critical with high-pressure injection engine technologies. IDID can form suddenly deep inside the injectors and significantly reduce power and fuel economy, and in some cases, cause injector failure.

Fuel filter plugging

In addition to forming deposits in the fuel injection system, another known issue that affects high-pressure injection (HPI) systems is premature fuel filter plugging. Fuel filters capture unwanted contaminants from the fuel that left unchecked, can cause serious damage. As the flow of the fuel through the fuel filter becomes restricted or plugged, a loss of power will result.

Meeting the challenge

Cenex Roadmaster XL addresses the needs of new diesel engine technology with its proprietary additive package, including an injection stabilizer that meets the Tier IV Final EPA emission standards in 2014. Testing confirms that the upgraded injection stabilizer successfully removes and prevents IDID, including carbonaceous, soap/metal carboxylates, and lacquer-type deposits.

Optimal performance and fuel efficiency

No other premium diesel fuel contains a more complete, balanced additive package that helps avoid the hassle associated with using aftermarket products to top treat fuel. Cenex® Premium Diesel Fuels are “smart-injected” at the terminal to ensure stringent quality specifications are met.

Do you have general questions about diesel fuel? Here are some ANSWERS.

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