Diesel Exhaust Fluid

Our Diesel Exhaust Fluid Sale Team Helps You!

  • What is DEF? Diesel Exhaust Fluid, or DEF,  is used in a Selective Catalytic Reduction System (SCR) and reduces Nitrogen DEF Packaging | McPherson OilOxide (NOx) emissions.

It brings 3 direct benefits to your trucks:

  • They can’t run without it. Vehicles equipped with an SCR system use sensors to determine that DEF is in the system and not another liquid such as water. The SCR system is made integral to driving – when the DEF runs out the truck will slow to a crawl, and in deluxe models, it quits on you.
  • DEF improves your fuel economy. By reducing exhaust gas re-circulation with a mix of water and urea DEF captures 90 percent of the foul air that would otherwise be injected back into your truck’s intake.
  • Advertising that you’re a green brand increases your sales. It’s proven that telling people you have DEF as a part of your SCR system gives you a green, money-making benefit.

You can order it right now…
Call McPherson and ask for DEF:
888-802-7500 or email: customercare@mcphersonoil.com

We ship across the south – from Alabama to the Florida Panhandle.


DEF Tank | McPherson OilWe know what DEF means for you.

In vehicles with an SCR system, you’ve got to treat DEF like your gasoline. Manufacturers help you by installing a DEF gauge, or low DEF warning light in your dashboard.

If your DEF depleted truck is still running your vehicle enters “Limp Mode” and throttles down to about 5 miles an hour, maximum – forcing you to drive it to the nearest DEF seller and top off the SCR to reinstate full diesel combustion.

You can find DEF at many C-stores, but why wait until you’ve got a limping, broken down truck? A busy business can’t afford that.

…Now’s the time to plan smart:

  • Buy DEF from McPherson at a cheaper rate than you can at even your favorite retailers. The more you plan…the more you save.
  • Equip your entire fleet with extra DEF and you’ll never be stranded limping down a lonely highway at 5 miles an hour…30 miles from the nearest exit to nowhere.

Call McPherson to talk to our DEF sales team at 888-802-7500, or at email us at customercare@mcphersonoil.com

Learn how we can streamline your fleet, save you money and lower your insurance exposure with a master plan for your Diesel Exhaust Fluid and SCR systems.

The Story of Diesel Exhaust Fluiddef_image

In 2010, cars and trucks with diesel engines that were sold in the United States had to meet new American EPA emissions requirements.

The 2010 Emissions standards in North America have mandated that all on-road diesel vehicles manufactured in 2010 or later must be equipped with technology to reduce NOx emissions. NOx emissions need to be removed from the air because they contribute to global warming, acid rain, and atmospheric particles that cause visual impairment.

To do so, many diesel engine manufacturers (OEM’s) decided to use Selective Catalytic Reduction (SCR), which is an emissions after treatment technology that converts nitrogen oxides (NOx) in the diesel-engine exhaust stream into nitrogen and water vapor…two natural components in the air we breathe.

It does this with the help of urea. Commonly known as a major component in mammal urine, it was the first organic chemical to be artificially produced in a lab. It’s a neutral solid that doesn’t have color or odor and dissolves in water. It’s also used in fertilizer.

SCR technology isn’t new—its been in use for many years in Europe and since the late 1950’s on large commercial boilers.

SCR converts NOx to nitrogen and water vapor using a catalyst, exhaust heat, and Diesel Exhaust Fluid (DEF). The DEF is injected into the diesel exhaust stream where it reacts with a chemical catalyst to convert NOx into a harmless gas.

  • DEF is API certified and meets ISO22241 specifications.
  • Diesel Exhaust Fluid is non-toxic, non-flammable, colorless, non-hazardous, and very easy to use, and applies to vehicles produced since 2010.

Filling Up Def Tank | McPherson OilCurrently, there are two technologies that meet these 2010 EPA guidelines: 1. Advanced EGR
and 2. Selective Catalytic Reduction (SCR)

SCR is the most widely used technology and can reduce NOx emissions by 70-90 percent.

Don’t forget to call McPherson for Diesel Exhaust Fluid.

Ask how SCR systems can lower your fleet spending at 888-802-7500