Fuel Quality Assurance

Couch Oil Company has the experience and knowledge to assist you in keeping your stored fuel pristine and fresh, so it is ready for use at all times. Due to the removal of sulfur from today’s diesel fuels and overall degrading fuel quality, it is imperative to initiate a program to maintain your tank and keep your fuel in like-new condition.


What is Fuel Polishing?

Yes! Fuel polishing is so important in the maintenance of your hospital, rest home, technology company or other commercial building in the Triangle area. When you partner with Couch Oil Company and take part in our Fuel/Tank Preventative Maintenance Program, you will prevent the following:

  • Fuel system failure
  • Clogged fuel filters
  • Loss of power
  • Bacteria, fungus and algae issues
  • Sludge or water entering your fuel system


Why Rely on Couch Oil Company for Commercial Fuel Polishing & Tank Cleaning?

As a family-owned and operated company serving Durham and the surrounding area businesses since 1949, Couch Oil Company knows a thing or two when it comes to fuel tank cleaning. This is why we offer our customers the opportunity to be a part of our Quality Assurance Fuel Program, which allows you to better manage and maintain your fuel.


Our Quality Assurance Program Includes:

  • An initial testing of your fuel
  • Removing any debris, particulate or water from the bottom of your fuel tank
  • Polishing the stored fuel
  • Treating your fuel with Diesel Fuel Improver and Biocide
  • Shock treating your fuel and pumping out any excess water
  • Quarterly, bi-annual and annual bottom samples based on the needs of your fuel tank
  • ASTM certified lab analysis (if required)
  • NFPA certified lab analysis (if required)

The test results from your fuel tank will indicate if there is any water, sediment, bacteria or fungus in your fuel. You will also find out the flash point, cetane levels, API gravity and sulfur content of your fuel. If you are in need of a ASTM certified lab analysis, we will be happy to provide one.

Make sure your business is prepared and your fuel tank is well maintained in the event of a blackout — contact Couch Oil Company today for premier Durham, NC fuel polishing and tank cleaning services.