Loading...

Do's

  • Keep the DEF tank fill area and nozzle clean. DEF is supersensitive to airborne and residue contamination. Contaminated DEF will affect SCR system performance and lead to engine de-rating and even engine damage.

  • Store DEF in dedicated containers, preferably stainless steel drums HDEP plastic totes, or gallon jugs.

  • Store DEF in a cool, dry location out of direct sunlight.The ideal temperature range is 12-86 degrees F (-11 – 30 degrees C).

  • Monitor DEF quality with a digital refractometer. The ideal concentration is between 32.5 and 37 percent urea.

  • DEF can be stored for up to 2 yearsin ideal climate conditions.

  • Top off the DEF tank dailyto prevent condensation, which can degrade DEF quality.

  • Low DEF levels will be indicatedby a dashboard light. If the DEF tank is empty, the engine will still run but will start de-rating in a few hours and continue until the DEF is replenished.

Don'ts

  • Don’t confuse fills.by a If DEF is filled into the diesel tank, the engine will stop running after a short period and can possibly cause serious damage to the engine fuel and SCR system.

  • Don’t store metal container.by a DEF is not toxic but is corrosive to metals such as carbon steel, aluminum, copper and zinc. Never uses containers that might have been used to store other fluids.

  • Don’t store below 12 degrees F (-11 degrees C).DEF freezes at 12 degrees F (-11 degrees C) and turns slushy but this doesn’t affect performance. If storing DEF in freezing temps, make sure it is in expandable containers. Never put fuel additives in DEF.