What is DEF contamination?
What is DEF contamination?
Diesel Exhaust Fluid (DEF) is a colorless additive used with diesel engines to reduce emissions. The latest DEF contamination incident caused engine flameouts at altitude in two Cessna 550 jets, one of which experienced dual-engine flameout resulting in a total engine failure landing at a Savannah, GA airport.
What happens if a water pump is contaminated with Def?
DEF is comprised of 32.5% urea and 67.5% de-ionized water. Contaminated DEF can cause problems with the Selective Catalytic Reduction (SCR) system, and can cause premature water pump and injector wear. Contaminated DEF can also leave gummy deposits on the catalyst. Repairing or replacing the SCR unit can be quite costly.
How often do you need to fill up the DEF tank?
How Often Do You Need To Fill Up the DEF Tank? That question specifically depends on miles per gallon and usage of the diesel truck in question. No matter how heavy the load, according to the OE manufacturer, the typical average light duty truck will consume 2-3 gallons of DEF per 800 miles.
What should I do to avoid using contaminated Def?
You should take every precaution to avoid using contaminated DEF. To prevent DEF from becoming contaminated make sure the pumps and containers you use with it are not used with other fluids. If you have to clean DEF fueling or storage equipment, do so with de-ionized water to avoid contaminating the DEF.
Do you have to clean out diesel exhaust fluid tank?
No, simply run the tank as empty as possible before refilling. Diesel Exhaust Fluid (DEF) is a pure chemical, so your bulk storage tank does not need to be cleaned out unless it is contaminated. DEF from different API-certified suppliers can be mixed.
What happens if the DEF tank gets contaminated?
The delivery driver can make a mistakes and off-load in the wrong tank. So not only is the DEF tank contaminated, but there is a high possibility that by the time the clerk figures out what happened, their customers have already filled up with the contaminated product.
You should take every precaution to avoid using contaminated DEF. To prevent DEF from becoming contaminated make sure the pumps and containers you use with it are not used with other fluids. If you have to clean DEF fueling or storage equipment, do so with de-ionized water to avoid contaminating the DEF.
No, simply run the tank as empty as possible before refilling. Diesel Exhaust Fluid (DEF) is a pure chemical, so your bulk storage tank does not need to be cleaned out unless it is contaminated. DEF from different API-certified suppliers can be mixed.
What to do if you put Def in your fuel tank?
If you are ever in doubt if the correct fill hole was used, drain and flush the tank with deionized water or clean DEF fluid. To avoid running up excessive repair bills, talk to your operators and be sure they know to immediately contact you and your Volvo equipment dealer if they accidentally added DEF to the fuel tank.
