Q6000 – Fuel Dilution Meter

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Fuel dilution in lubrication oil can cause serious engine damage.  In diesel engine crankcases, for example, contamination can be caused by excessive idling, defective injectors and loose connections.  Fuel dilution can also cause intercooler leakage in aircraft hydraulic systems.


The Q6000 Fuel Dilution Meter (FDM) is a portable fuel dilution meter that can be used in the laboratory or in the field to provide rapid and accurate measurements of fuel contamination in engine oil.
The Q6000 was designed with a patent-protected sampling method using an innovative “fang” design.  The sampling occurs using a headspace system with repeatability of <+5 percent RSD up to 15 percent fuel content.  The headspace vapor sampling approach also eliminates the need to heat fuel-laden samples and does not require the use of solvents.


Developed in collaboration with the U.S. Navy, the Q6000 detects contamination in less than two minutes, allowing operators to make immediate decisions. The device requires just a small sample size in a disposable vial.  The analysis results are displayed in percent fuel so operators can make rapid decisions about maintenance actions.  In addition, the intuitive touchscreen and audio prompts guide the operator through the testing process.


Features & Benefits


  • Conforms to ASTM WK46501 – “New Test Method for Test Method for Fuel Dilution of In-Service Lubricants Using Surface Acoustic Wave Sensing”
  • Innovative headspace sampling fang design ensures excellent repeatability (<= 5% RSD).
  • 0.2 to 15% fuel dilution measurement range.
  • Disposable FDM vials eliminate carryover contamination.
  • Onboard memory allows use of up to three stored calibration profiles.
  • Sample ID entry and data file export via USB cable.
  • Battery powered, lightweight, optional hard case for transit.


Fast and easy to use


  • Small sample required in disposable FDM vial – no solvents needed for cleaning.
  • Test results within a minute for direct measurement of fuel dilution.
  • Result in % fuel displayed, allowing immediate maintenance actions.
  • Color touchscreen.
  • Audio prompt feature guides operators through testing.


YouTube Training Video


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