10 Myths and Facts About Diesel Exhaust Fluid

DEF or Diesel Exhaust Fluid is a consumable fluid that helps reduce harmful chemicals released in the atmosphere. It works its magic with SCR or Selective Catalytic Reduction, invented in the United States in 1957. Today, most engine manufacturers introduced these systems as their usage became more prevalent along with this cam some myths surrounding this system, which we will be debunking.

DEF is Toxic

A misconception about DEF is that it is toxic. DEF is a non-hazardous and non-flammable fluid with a natural pH of 9.0, which is about the same as the ordinary baking soda in your kitchen.

DEF is Urine

While it is true that urea is one component of DEF, it does not mean that it is urine altogether. Urea is a waste product of several living organisms. Synthetic urea in DEF has been produced since the 1930s through synthesizing synthetic ammonia and carbon dioxide in a heated and sealed process.

It is Hard to Use

Filling up your DEF tank is not a difficult task, as it is as simple as putting water in your car’s radiator. Additionally, there is no need to refill your DEF tank every time you fill your gas tank as a 2.5 gal diesel exhaust fluid is sufficient for about 800 or more miles of travel.

DEF is Unstable

Diesel Exhaust Fluid is also not difficult to store as its components like urea does not quickly transform into a toxic chemical despite temperature changes. Freezing and humid temperatures do not affect the substances that are within DEF, making them stable.

You Can’t Easily Buy DEF

Buying DEF is no hassle as you can purchase this fluid from any truck stop, gasoline station, and auto parts shop. You can also purchase DEF online, and its price range goes from at least $2.50 to $8 per gallon.

Only Professionals Can Fill Your Tank

There is no need to ask for a professional to fill up your DEF tank as it is easy to use, making it convenient to access that you can easily do it even in your garage.

Non-Factory DEF Will Damage My Car

While several brands of DEF are available for use, all of them are just the same DEF that is non-toxic and will not damage or harm your vehicle.

DEF Evaporates

The only time that DEF can turn into ammonia and evaporate is if you display and constantly expose it at 120 degrees for two years. Other than that, there is no need to worry about your DEF evaporating, especially if you will use it for your vehicle.

DEF is a New Invention

The SCR and DEF system has been around for a while now, as commercial and agricultural applications use it. While it may sound new to some, it is not a new invention.

DEF has More Cons Than Pros

Aside from its cons of increasing operating cost, requiring more room for your truck, and adding a small amount of weight to your vehicle, its pros outweigh these. This fluid helps in fuel efficiency, increases power, and reducing maintenance for your car.

For more information about diesel exhaust fluid and diesel parts, here is an infographic provided by Pure Diesel Power.

Read More: The most convenient tire option for your vehicle



Scroll to Top