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The Essentials of Diesel Exhaust Fluid (DEF): A Comprehensive Guide

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When it comes to maintenance for diesel vehicles, most truck drivers think about replacing filters, inspecting brakes and engine oil. However, not a lot of thought is put into diesel exhaust fluid (DEF) and many people underestimate the benefits it brings to your truck and the environment. But what exactly is diesel exhaust fluid and what are the advantages associated with this product? Let’s look into it.

What Is Diesel Exhaust Fluid?

Also called DEF, diesel exhaust fluid is a liquid used to reduce the pollution emitted by large diesel engine vehicles. It consists of a solution made of urea and deionized water, and it reacts with the gases released by diesel engines transforming them into nitrogen and water. The product became more popular as environmental awareness increased and it’s now a mandatory technology in many countries. 

Do I Need Diesel Exhaust Fluid for My Vehicle?

Generally speaking, most mid-size and large diesel vehicles manufactured after 2010 need to have diesel exhaust fluid. This includes trucks, buses, large pickups, or any heavy car that uses diesel as fuel. This is typically mandatory in order to make vehicles meet modern standards of pollutant emissions.

How Often Should I Check DEF Levels?

In most cases, diesel exhaust fluid consumption corresponds to 2-3% of the diesel consumed by your truck. This usually means that you won’t run out of DEF before reaching a few thousand miles. However, it is recommended that you top it off regularly as this consumption calculation may vary depending on the conditions of the truck, and the load it is carrying. Moreover, since DEF is mostly made of water, it can evaporate or freeze depending on weather conditions, which makes it even more important to check it regularly.

What Are the Benefits of DEF?

Diesel exhaust fluid is mostly known for its capacity of dramatically reducing the emission of pollutants by trucks and buses, and it is regarded as an effective way of protecting the environment. However, once the technology was implemented, it was soon discovered that SCR and DEF engines could actually provide more horsepower and efficiency to heavy vehicles. Moreover, the fact that these engines are more efficient also means that less maintenance is required. In other words, diesel exhaust fluid not only helps you reduce your carbon footprint but also brings financial advantages to you and your truck.

What Happens If I Don’t Check Def Levels?

As mentioned previously, DEF has recently become mandatory in many regions, meaning that not checking the level of your diesel exhaust fluid could lead to warnings and fines. Additionally, lower levels of DEF will likely result in lower engine performance and increased fuel consumption.


Diesel Exhaust Fluid in Mississauga and Kitchener

Now that you have read valuable information regarding the uses and benefits of diesel exhaust fluid, why not take the next step? At Monarch Oil, we provide a wide range of high-quality products to make sure your vehicle operates in its optimal condition. From engine oils to transmission fluid, our experienced professionals can you find the solution your truck needs. Reach out to us!

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