If you have come across this article, then you are on the right track to learning when and how to add DEF. In this article, you can find all the necessary information about how this process works. So, run to find out!
For starters, you should understand that as soon as the low fluid level indicator appears on the instrument panel, you need to add DEF immediately. This process is objectively simple, here is a step-by-step instruction:
- First, refer to your owner’s manual to find the exact location of the DEF tank. But very often it is located in the same place where diesel fuel is added. In older models, it may be located under the hood, where the tank will be clearly marked in the engine compartment.
- For convenience, take a funnel to be able to pour the liquid into the tank. You can also take a towel to protect yourself in case of a spill.
- Pour out the liquid! When it’s full, just close the lid. Done! The next time the onboard computer reboots, the indicator will go out.
Everything is very simple here. But if you are interested in learning about this process in full, then I suggest you stay with us and find a lot of interesting information about DEF in the following sections.
What is DEF and How Does it Work?
Here is an Explanation in Simple Words
On a chemical level, according to Wikipedia, DEF is a combination of deionized water and urea that combine to cause a chemical reaction that turns harmful nitrogen oxide (NOx) into water and gas. NOx is known to be a major source of smog, increased greenhouse gases, and acid rain.
Urea is the active ingredient in DEF. This nitrogen-based chemical is not only used in DEF, but also in fertilizer.
It Seems That DEF is Frozen, What to Do?
If the temperature drops below 15 degrees Fahrenheit, the DEF may appear to freeze. But this is not so, and let’s understand why. At 2\3 DEF consists of water, so when the temperature drops below 15 it starts to become freeze. But it will not become more frozen, because the tank contains a heating element in the middle, which will def defrost when the engine warms up.
If the DEF is very low, it may actually seem like the fluid is completely frozen, in which case just add more def and the heating element will handle the defrosting after the engine starts.
Remember the most important thing, never add anything extra to the DEF tank other than the appropriate substance, even if you think it will help defrost the DEF. In fact, it can only hurt, so if you think your DEF is freezing, remember the tips mentioned above.
How Long Is A Tank Of Def Last?
The answer to this question depends on a number of factors.
First, it all depends on the model you will use, how old it is and how it was serviced. All of this affects how long you can drive without adding DEF. The average might be 3,000 miles, but again, that’s relative.
You can find out more information in the manual for the operation of your car. It will indicate the approximate distance you can travel before adding DEF.
Remember to keep an eye on your DEF gauge, as its lack can often catch you off guard.
What Will Happen If You Accidentally Add Diesel to The DEF Tank?
The DEF tank contains certain sealants that are designed to be compatible with urea. If you try to add diesel fuel to the DEF tank, you will damage these seals, causing the seal to leak. In this case, the DEF tank will need to be replaced.
What Happens When The DEF Fluid is Low?
A low amount of DEF in your tank will affect your car’s engine power. The engine will go into reduced power mode and will no longer be able to accelerate as fast.
If you leave the DEF tank completely empty, the car will most likely not move, although there are times when they still manage to crawl.
To avoid this problem, constantly monitor the indicator that shows the DEF level. Carry a spare container of DEF with you so that you can fill it up in an emergency.
Why is The Price of DEF Rising?
Recently, there have been fears in society about the lack of this liquid. Because China is the leading producer of the urea compound found in DEF in the world.
And thus, in order to avoid a shortage of food in its own country, China limited supplies to foreign markets. Despite the fact that it has already affected the market of Japan and South Korea, it has not yet caused a stir in the USA.
Сan You Add DEF While The Engine is Running?
The answer will be affirmative, yes, it is possible. When the car is started, you can add both DEF and diesel. But remember that it is extremely not recommended to do this when the car is in motion.
What is The Conclusion of This Article?
From this article, we have learned that using DEF is not as difficult as it might seem. And certain problems with its operation, freezing, and low fluid in the tank is not really a problem if you find the relevant information about these problems. I hope this article was useful to you!
Dennis Watkinson is a founder of the Honda Car Review platform. He devoted his whole life to repairing Honda cars. Now Denis shares his experience and knowledge, thanks to which maintenance and use of Honda automobiles can be a pleasure.