Diesel Exhaust Fluid (DEF)

An absolute “must have” for vehicles with diesel engines. DEF is a non-toxic, colourless, odorless fluid that helps with reducing harmful emissions.

You’ve got to try it! Avoid engine damage and keep your diesel engine running smoothly.

Why Switch to Brown's Fuels as Your DEF Supplier?

Switching is hassle free.
There are no hidden fees. We offer DEF in jugs, drums, or in bulk.

FREE delivery on orders over $250. Some conditions apply.

We Offer 24 Hours Service,
7 Days Per Week

Local, Family-Owned Business With a Focus on Customer Service.

When you want a local company you can trust, Brown’s Fuels has earned a solid reputation for being courteous, reliable, and on time when dealing with our customers.

What is DEF?

Diesel Exhaust Fluid (DEF) is a solution of high purity urea and de-ionized water. It is the operating fluid required in vehicles using Selective Catalytic Reduction (SCR) technology. Engineers developed the technology to meet the 2010 emission standards for reducing nitrogen oxide (NOx) exhaust emissions from diesel engines.

The fluid is contained in a designated DEF tank and it is sprayed into the exhaust system before the catalytic converter breaks down NOx into harmless nitrogen and water vapors.

DEF has a shelf life of 12 months if the required storage conditions are followed. However, DEF that has been stowed for a longer period may be usable if analyzed to confirm that it still meets the DEF specification. Storage facilities can be adapted to suit customer needs.

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