It is important to have the best diesel emission fluid. Let’s take you step by step, type by type, and find the best diesel emission fluid for you.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Hot Shots Secret Diesel Emission Fluid READ REVIEW

Best For More Power: Buy: Hot Shots Secret Fuel System Cleaner READ REVIEW

Best For All Diesel Cars: Buy: Blue Def Diesel Emission Fluid READ REVIEW

Best For Fuel Lines: Buy: Chevron Diesel Emission Fluid READ REVIEW

Best For Spill Proof: Buy: Adblue Diesel Emission Fluid READ REVIEW

Best For Diesel Truck: Buy: Acdelco Diesel Emission Fluid READ REVIEW

Best With Part Number: Buy: Air1 Diesel Emission Fluid READ REVIEW

Best For Affordable Price: Buy: Prestone Diesel Emission Fluid READ REVIEW

Best Overall: Hot Shots Secret Diesel Emission Fluid

Buy on Amazon

The Hot Shots Secret Diesel Emission Fluid is specially designed for your daily purpose and has plenty of most useful features. The hot shots secret diesel emission fluid is great with great stuff, works fast and it is very good. Hot shot's secret everyday diesel treatment can treat 400 gallons of fuel as a premium dose, and 200 gallons of fuel as a performance dose. These products offer highly concentrated formulas that are much more effective than the diluted bottled products commonly found on the retail shelf.

The fluid works well and it has improved mileage. Finally, the hot shots secret diesel emission fluid is power is great and it works fine.

Most customers quickly discovered that the fluid can be used on any diesel products to watch it because it'll lift the front end off the ground. In addition, they also found that the fluid is more taylored for #2 and #1 diesel that you find common at fuel pumps across America. In addition, they also found that the EDT has the lx4 additive already mixed in with it. In conclusion, many customers have used the fluid for more than a few months without any issues, and it shows no sign of giving up.

• It has a diesel engine, so it will work in it.
• This works very well and it has more pep.
• Boosts cetane up to 7 points.
• Keep your injectors spraying efficiently with a keep-clean level of injector cleaner.

Best For More Power: Hot Shots Secret Fuel System Cleaner

Buy on Amazon

Hot Shots Secret line of fluid comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Hot Shots Secret Fuel System Cleaner comes in 1-quart bottles plus it is designed to support a 'clean then boost' strategy. When your injectors need cleaning, hot shot's secret diesel extreme rejuvenates your diesel fuel system's functioning to its original performance power. This diesel fuel system cleaner is well - suited for the following engines.

The fluid is a fully formulated, concentrated injector cleaner and cetane booster that extricates all external and internal diesel injector deposits (idids), including polymeric and waxy deposits. Also, it has corrosion inhibitor and it is great with less smoke. Most importantly, the hot shots secret fuel system cleaner restores the throttle and contains the most concentrated detergent formula on the market.

Almost all buyers agree that the fluid cleans injectors very well. Also, a few also found that the fluid cleans injector tips, cylinders, fuel lines & tank used regularly on the 2015 ram eco-diesel. Also, they strongly agree that the fluid can be used by the shade tree mechanics, which they say works. To sum up, the tone of buyers is very positive and we believe that the fluid suits the purpose.

• It is easy to pour into the tank.
• This does the job, sounds better and it works very well.
• This can be used in a work van, so not talking race performance.
• This is very happy, is noticeable and it makes for great company.

Best For All Diesel Cars: Blue Def Diesel Emission Fluid

Buy on Amazon

The Blue Def Diesel Emission Fluid's superior materials make sure that it ages well with use. The blue def diesel emission fluid is a non-toxic solution of 67.5 percent purified water and 32.5 percent ultra pure automotive grade urea. Make sure this fits by entering your model number. These are the highest quality and safety standards in place to ensure optimum scr performance.

The fluid is used approximately every 300 miles. Also, the fluid is designed to accommodate a def fill nozzle to ensure only def is put into the tank. Above all, the blue def diesel emission fluid is stable, colourless and odourless, and meets iso standards 22241 for purity and composition and is an American petroleum institute (api) certified diesel exhaust fluid.

Almost all buyers found that the fluid works for an audi q7. Further, they also found that the fluid is suitable for ford diesel systems.

• This does its job correctly, there really isn't much to say.
• This will work for any diesel engine required.
• This is an easy to use funnel.
• This is made with fast shipping and it works great.

Best For Fuel Lines: Chevron Diesel Emission Fluid

Buy on Amazon

The best part: Chevron Diesel Emission Fluid costs comparatively low and it is available to ship in 24 hours. The chevron diesel emission fluid has followed the instructions and it has more pep. You can use technology and when you do it will clean your engine, leading to better performance, lower emissions and maximum fuel economy. Techron helps remove these deposits, restoring lost power and performance.

The fluid is designed for carbureted or fuel-injected spark ignition engines. Above all, the chevron dieselemission fluid cleans harmful deposits from clogged fuel injectors and dirty carburetors in a single tank full.

Almost all customers found that the fluid cleans really well and it accelerates much better. And, they also found that the fluid is the stuff, the real concentrated stuff. Further, they strongly agree that this is the concentrated mixture of the same additive called Techron that is found in the chevron gas, which is a top tier gas. Overall, many have used the fluid for more than a few months without any problems, and it shows no sign of giving up.

• This is incredible, comes with awesome stuff and it works great.
• Works in one tankful, while you drive.
• This is, gasoline is a mixture of hydrocarbons including ethanol and other impurities.
• This is a concentrate and suggests 1oz per gallon, and about 50.

Best For Spill Proof: Adblue Diesel Emission Fluid

Buy on Amazon

The Adblue Diesel Emission Fluid's material feels more premium than its price would suggest. Make sure this fits by entering your model number. Also, the fluid works great, is very good and it can get for the same price. In short, with a 4.7 rating and more than 2480 buyers, the adblue diesel emissionfluid stands as the best choice.

Almost all customers found that the fluid is easy to buy in bulk from places like Walmart at a significant discount, and fills with minimal mess. In addition, they strongly agree that the fluid is the oem fluid for all European products. In addition, they say that if the def fluid itself will work, the design of the screw mount mechanism that inserts into the def tank needs to be compatible. To sum up, the tone of buyers is very positive and we believe that the fluid suits the purpose.

• Vehicles with scr code u42, meet iso spec: 22241-1.
• This has a BMW part number 83190441139 and complies with iso 22241-1.
• Approved for bmw audi vw mazda and other diesels that require emissions fluid.
• This is the approved brand for VW Passat TDI'S 2012.

Best For Diesel Truck: Acdelco Diesel Emission Fluid

Buy on Amazon

The Acdelco Diesel Emission Fluid's material feels more premium than its price would suggest. The Acdelco diesel emission fluid is manufactured to meet expectations for fit, form and function, offering high quality and great value. The Manufacturer says: Our advantage parts provide a competitively priced, yet quality alternative to unbranded aftermarket components. In addition, the fluid is a mixture of high purity synthetic urea and deionized water and is classified as minimum risk for transportation.

The fluid includes vented nozzle(s) that make pouring easy by helping to prevent glugging. Further, the fluid is used to help convert nox, an environmental pollutant, into harmless nitrogen and water. Above all, the Acdelco diesel emission fluid is designed for diesel engines, Acdelco diesel exhaust fluid (def) is an aldehyde free, nox (nitrous oxide) reducing treatment.

Almost all customers found that the fluid is gm duramax yes. Further, a few strongly agree that the fluid is only one but the package says it is 48 lbs. To sum up, many customers have used the acdelco dieselemission fluid for more than a few months without any complaints, and it shows no sign of giving up.

• It has a two - year shelf life.
• These are 2 2.5 gallon jugs.
• It has 1 complimentary nozzle. Extra nozzles are sold separately.
• This can be used in any diesel system which requires def.

Best With Part Number: Air1 Diesel Emission Fluid

Buy on Amazon

For a low asking price, Air1 Diesel Emission Fluid has managed to overwhelm their customers by packing as many features as they could. Moreover, it is contained in a separate tank and sprayed into the exhaust gases. Make sure this fits by entering your model number. Lastly, the air1 diesel emissionfluid is used to chemically reduce NOX emissions from trucks and buses powered by diesel engines.

To sum up, at the price, they believe that they got a steal of a deal with it.

• Choosing air1 brings you reliability and reassurance.
• Delivers what they promise.

Best For Affordable Price: Prestone Diesel Emission Fluid

Buy on Amazon

If you often find yourself confused about convenient and suitable fluid, Prestone Diesel Emission Fluid is your end point. The prestone diesel emission fluid is formulated with high quality urea and demineralized water to work with all scr. Diesel exhaust fluid (def) is a consumable and essential fluid for maintaining selective catalytic reduction (scr)-equipped modern diesel engines. In addition, this is a stable fluid that is colorless and odorless.

Above all, the prestone diesel emission fluid is compatible with adblue and it is great for fuel efficiency.

Almost all customers agree that the fluid works well and saves lots of money. Furthermore, a few also found that the fluid can be used in Mercedes benz. Also, they strongly agree that the fluid is def, nothing outstanding about it. So, customers were very happy to recommend it to friends and families.

• This is made of stainless steel or high density polyethylene.
• Check the owner’s manual for proper usage of your vehicle.
• Certified to meet all api & iso 22241 requirements.
• Formulated to work with all scr-equipped diesel engines.