Diesel Exhaust Fluid

Robinson Oil Company carries a full line of Diesel Exhaust Fluid to meet the needs of your car, truck, tractor or any diesel powered engine that uses SCR technology. DEF is a very safe fuel to handle as it is not flammable, explosive or toxic.

We carry DEF in the following sizes:

  • 2.5 gallon cases
  • 55 gallon drums
  • Bulk

What is DEF?

  • It is a blended aqueous urea solution of 32.5% high purity urea and 67.5% deionized water.

What is the freeze point of DEF?

  • A 32.5% solution of DEF will begin to crystallize and freeze at 12 deg F (-11 deg C). At 32.5%, both the urea and water will freeze at the same rate, ensuring that as it thaws, the fluid does not become diluted, or over concentrated. The freezing and unthawing of DEF will not cause degradation of the product.

What are the storage requirements?

  • DEF should be stored in a cool, dry, well-ventilated area, out of direct sunlight. The optimum storage temperature is up to 77 deg F (25 deg C).

What is the shelf life?

  • DEF will degrade over time depending on the temperature and exposure to sunlight. Shelf life will be about one year if stored between 10 and 90 degrees Fahrenheit. If the maximum temperature does not exceed about75 degrees Fahrenheit for an extended period of time, the shelf life will be two years