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Cenex® Ruby FieldMaster®

For businesses that run on diesel — a better running fuel.

Proven in the lab and in the field

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.

Ruby Fieldmaster 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 more than 14,000 hours of grueling real-world tests, Ruby Fieldmaster prevented injector fouling and filter plugging while delivering premium power and fuel economy.

Compared to typical untreated #2 diesel fuel, RUBY FIELDMASTER

  • 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 48)

  • Reduces Maintenance Costs

  • Cleans Up And Prevents Injector Fouling

    in 2007 and newer engines

  1. A Better Choice
  2. Fuel Injectors
  3. Feedlot Protection
  4. Tier 3 / Tier 4 Engines
  5. Complete Solution
  6. Railroad Boosts Fuel Economy with Cenex® Premium Diesel

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

Ruby Fieldmaster 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.

Fuel Up Today

Locate your nearest Cenex Premium Diesel Fuels dealer.

Cenex Total Protection Plan®

When used with qualifying Cenex® lubricants, Ruby Fieldmaster is covered by the only 10-year, 10,000-hour warranty in the industry – and it comes with zero loopholes.

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