Diesel Exhaust Fluid (a.k.a Adblue)
Diesel Exhaust Fluid (a.k.a Adblue)
Diesel Exhaust Fluid (a.k.a Adblue)

Diesel Exhaust Fluid (a.k.a Adblue)

Regular price $18.53 Sale


Now available on GrabMart Islandwide delivery.



What is Diesel Exhaust Fluid (DEF)?

Diesel exhaust fluid (DEF), also commonly known as Adblue, is a urea-based solution that used in conjunction with a selective catalytic reduction system installed in the exhaust reduces harmful nitrogen oxide emissions from diesel engines. DEF is composed of 32.5% high-purity urea and 67.5% deionized water. DEF is clear, odorless and safe to handle.

The solution is added to a separate storage tank in diesel-powered vehicles equipped with selective catalytic reduction (SCR) technology. The fluid is injected into the hot exhaust stream of the vehicle and helps break down the nitrogen oxide gases in the exhaust into nitrogen gas and water vapor, both harmless to the environment.


Why Use DEF?


It is an inexpensive and efficient option for lowering NOx emissions. Nitrogen oxide (NOx) is produced from the exhaust of diesel vehicles and is a major contributor to smog and other air pollution. Exposure to NOx can also lead to respiratory and heart disease. The combination of DEF and SCR technology not only reduces NOx emissions, it actually improves a vehicle’s horsepower by making diesel engines run more efficiently, resulting in fuel savings of up to 8%. It is easy to use. Any diesel vehicle with SCR technology can use DEF. There are no special filters or absorbers required. The driver simply fills their DEF tank periodically and the SCR technology handles the rest. A gallon of diesel exhaust fluid will generally last about 480 – 800 km. Fleet owners can purchase DEF in bulk storage (IBC tanks) with custom dispensing solutions.

Product Concentration

On/Off Road
BESTCHEM DEF (Diesel Exhaust Fluid) a.k.a Adblue is manufactured to ISO 22241-1 specifications for use in passenger vehicles, trucks, construction and agricultural equipment. It is compatible with all Tier 4 final compliant equipment using Selective Catalytic Reduction (SCR) technology.


Packaging Size:
10 Litres

20 Litres
For other packing size, please contact us at enquiry@best-chemical.com or call us at +65 6755 2400



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Purchase VP Racing Fuels, Bestchem Methanol and Adblue round-the-clock (cash and carry) at Singapore's first and only 24/7 race fuel & lubricants, methanol and Adblue one-stop shop now!

Adblue refilling service available Mon-Fri 8.30am to 6.00pm (except PH) at 60 Senoko Road, Singapore 758124. For more information, call 6755 2400.