Best DEF Fluid Reviews of 2021 – Top Quality Diesel Exhaust Fluid

Diesel vehicles are a bit different as compared to the standard gasoline-powered vehicles. You must be knowing that since a diesel engine burns fuel at a higher temperature, the use of an exterior heating system in the wintertime becomes obligatory. Also, in diesel vehicles, you will be required to change the oil and fuel filters more frequently.

In general, it can be said that Best DEF Fluid is a liquid that is non-toxic in nature, colorless in appearance, and provides emission control in modern-day diesel engines. DEF is always injected into the exhaust stream of the vehicle.

This article is going to provide you with detailed and descriptive information about the best DEF that can serve your vehicle’s purposes in the best of your interests. Whether it is about the factors that you need to consider before buying the best diesel exhaust fluid or the comparative analysis of various brands that are involved in its manufacturing, we will be guiding you all the way. Let’s proceed.

What exactly is a DEF?

DEF basically refers to diesel exhaust fluid. If you are familiar with diesel vehicles, you might be familiar with this term too. It is bright blue in color and is a mixture of two-thirds deionized water and one-third urea. Its color serves as a basis of distinction as compared to diesel fuel. DEF is to be added to your vehicle as and when the need arises. It is put in a separate tank and it runs through the selective catalytic reduction (SCR) system. Nitrogen Oxide that gets emitted from diesel vehicles is broken down into the elements of nitrogen and oxygen that are found in the air.

Top 7 Best DEF Fluid for Duramax

You must be knowing that there are numerous brands in the present market scenario that claim to produce the best quality diesel exhaust fluid. The huge number of brands can further lead to confusion. To ease out that kind of situation we have made a list of the top 7 brands that manufacture good quality diesel exhaust fluid. Let’s have a look at them.

1. BlueDEF Diesel Exhaust Fluid Synthetic Water

If you are looking out to get the fuel economy of your vehicle improved substantially and get cleaner emissions from it, then this diesel exhaust fluid can serve you pretty well. The BlueDEF is non-flammable and non-toxic in nature. It also aids in the removal of nitrogen oxide from your emissions. In order to be more environmentally friendly, this diesel exhaust fluid converts the NOx into harmless nitrogen gas and water vapor.

The unique mixture of urea along with deionized water in this mixture of diesel exhaust fluid is colorless, stable, soluble as well as odorless. With this diesel exhaust fluid, you can up your vehicle’s fuel economy by 5 percent. It is available in a 2.5-gallon jug and you can inject this fluid into your exhaust stream with a specialized dosing module. This diesel exhaust fluid meets ISO standards 22241 in regards to its purity and composition.

2. PEAK BlueDEF Diesel Exhaust Fluid

The PEAK BlueDEF is engineered accordingly to be used in selective catalytic reduction (SCR) systems on diesel engines. With the use of this diesel exhaust fluid your vehicle can easily meet up the EPA 2010 regulations. It basically comprises a non-toxic solution that contains 67.5% of purified water and 32.5% of ultra-pure automotive-grade urea.

This diesel exhaust fluid can easily improve the fuel economy of your vehicle by up to five percent. It is non-toxic in nature and safer to handle and use. This best DEF fluid for Duramax is stable, colorless, and durable in nature and meets the ISO standards 22241 for composition and purity. You can easily and effortlessly inject this fluid into the exhaust stream of your vehicle with a specialized dosing module.

3. Genuine Ford Fluid PM-27-JUG Diesel

If you own any of those vehicles that are equipped with selective catalytic reduction (SCR) emissions for treatment, the Genuine ford fluid can serve you in the best of your interests. It aids in the reduction of NOx emissions in diesel vehicles that are equipped with an SCR catalyst.

However, you must keep in mind that the vehicle on which you are using this diesel exhaust fluid is characterized by dispensing systems that are fully compatible with diesel exhaust fluid. The nozzle of this product is appropriately made to fit perfectly to the DEF filler opening of 2011MY and forward Ford diesel along with many other competitive vehicles. It also aids in avoiding the overfilling of the tank reserved for DEF. This AUS32 fluid meets all the requirements and purity standards of ISO 22241 as well as DIN70071. It is easier to use and it creates no spills. It is characterized by high quality and is budget-friendly too.

4. Shell Rotella T4 Triple Protection Engine Oil

This diesel engine oil helps in providing hardworking protection that can easily adapt to your specific driving conditions. It is formulated specifically to protect under the most severe engine conditions that are found in modern low-emission engines as well as older hard-working diesel engines.

This product also helps to protect your vehicle’s engine under the most severe conditions that are commonly found in modern, low-emission engines as well as older hard-working diesel engines. The emission control system is effectively sustained owing to its durability where diesel particulate filters, as well as after-treatment systems, are put into use.

In general, this diesel engine oil aids in acid control that avoids corrosion, and also ensures wear and deposit control that keeps the working of your vehicle’s engine in a better condition. This engine oil can be the most favored choice when it comes to on-highway fleets, agriculture, public-transport operators, general haul, diesel pickup trucks, and high-powered vehicles where resistance is required in accordance with increased stress and heat.

It is designed to meet the API CJ-4 requirements and it also provides extra performance. Its enhanced shear stability performance ensures viscosity control and optimal oil pressure in your vehicle’s engine. This product also aids in protecting heavy-duty engines diesel that include the latest emission-controlled engines that use EGR and contain a diesel particulate filter.

Best Def Fluid for Cummins

5. AD Blue Diesel Emissions Fluid For SCR

This product comes up with two 0.5 gallon bottles of urea solution for blue tec diesel. On average, one gallon of this unit can last for around 1500 miles. It features a spill-proof nozzle. However, you must keep in mind that you do not pour this diesel exhaust fluid into the engine crankcase. This has been approved for BMW, Volkswagen, Mazda, Audi, and other diesel that require emissions fluid.

The bottle of this unit works perfectly fine to fill the ad blue tank and it also serves as a funnel when it’s the bottom is cut into half. The top portion of these bottles also features a positive stop for flow control which further aid in avoiding a mess. This unit eliminates the chances of fluids getting spilled. Owing to its self-draining and self-sealing design, this diesel exhaust fluid is highly ingenious.

6. Prestone HD1001-2PK Command DEF

This best diesel exhaust fluid has been formulated accordingly to work well with all the SCR-equipped diesel engines. This diesel exhaust fluid consists of a non-toxic solution having 67.5% of water and 32.5% of automotive-grade urea as its prime components. This fluid is compatible with AdBlue as well as other DEF products. It is consumable in nature and it is an essential fluid that can aid in the maintenance of vehicles characterized by having SCR-equipped modern diesel engines.

The Prestone Command DEF is easy to handle and safer to use. It is a stable and colorless fluid. It has been certified to meet up all the API and ISO 22241. It is budget-friendly on one hand and environment-friendly on the other. There have been no negative impacts or issues from the use of this product.

7. BlueDEF DEF001 Diesel Exhaust Fluid (DEF)

If you own a vehicle that has an SCR system, the BlueDEF can substantially reduce the levels of NOx emissions that can come out of its engine. It is non-flammable in nature. It consists of a non-toxic solution containing 67.5% of purified water and 32.5% of ultra-pure automotive-grade urea. When you inject this fluid into the exhaust stream of your vehicle, it simply converts NOx into nitrogen gas and water vapor. These tend to be harmless and natural components that are present in the air.

This fluid is colorless, odorless, and meets the requirements of the ISO standards 22241. It has been certified by the American Petroleum Institute (API). Owing to these features, you can be sure that this diesel exhaust fluid has the highest quality and safety standards that can aid you in ensuring optimum SCR performance.

What Factors to Look Out for Before Buying an Ideal DEF Fluid?

As we discussed earlier DEF or diesel exhaust fluid is utilized in diesel vehicles. If you own a vehicle model that has been manufactured in the year 2010 or even after that, you can be certain that it will be needing DEF fluid. At times, there is confusion about whether a particular vehicle requires a diesel exhaust fluid or not. In such cases, one must look for a specific DEF tank in the vehicle. However, one must always keep in mind that DEF and diesel fuel must not get mixed. There are certain factors that you need to consider before buying an ideal def fluid. Let’s have a look at them.

Level of Urea in DEF

Although there are numerous brands of best DEF fluid for Powerstroke available in the market, you should tend to choose the one that is approved. You must go with the brand that makes the use of pharmaceutical-grade urea instead of agriculture-grade urea. Agriculture-grade urea is characterized by impurities like biuret that are present in higher levels in such urea.

Level of impurities

You must choose to go with only those brands of DEF that have a limited percentage of impurities that may include zinc, iron, and aluminum. Only such kinds of DEFs cater to the requirements of the EPA standards. When poor-quality deionized water is used, the above-mentioned impurities enter the DEF easily. The presence of too many impurities in the DEF may result in the premature failure of the SCR system. In such cases, you should choose to go with DEF that is not too cheap, have fewer impurities and meet the EPA standards.

Recommendations of manufacturers

If you are facing perplexities while choosing a particular brand of DEF for your vehicle, you can always go with the recommendations of the manufacturers. If you go through your vehicle’s manual, you will be able to find out that it will be mentioning a DEF that has certain specifications. In general, you can go with a DEF that caters to ISO 22241 standards as it is capable to keep your SCR system protected.

Complying with EPA standards

A diesel exhaust fluid must comply with the EPA standards; ISO 22241 to be specific. Choosing to go with a cheaper DEF that does not comply with the ISO 22241 standards is definitely not going to serve you its purpose. Moreover, going with such a kind of diesel exhaust fluid can damage the SCR system of your vehicle.

How Does DEF Fluid Work? Is It Really Works? (Video)

Final words

By now, you must have gathered ample amounts of information about diesel exhaust fluid. Being non-toxic and non-flammable in nature, DEF fits perfectly amongst diesel vehicles. It also aids in controlling the level of NOx emissions that can keep the environment free from natural hazards. With our comparative analysis of various brands of DEF, you can always go with the best ones that suit your vehicle’s requirements well. Also, our buying guide will ensure that you get the best bang for your bucks.

If you have any further queries about the Best diesel exhaust fluid, you can write to us. We will surely be providing you with your desired answers. Mention your valuable feedback on this article as it motivates us to do our research and bring before you informative articles that provide you with sufficient information. Thanks for reading.

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