Survey Finds Diesel Exhaust Fluid’s (DEF) Impact on Fuel Economy a Top Concern - Engine Builder Magazine

Survey Finds Diesel Exhaust Fluid’s (DEF) Impact on Fuel Economy a Top Concern

In an August 2013 online survey of the trucking industry, PEAK Commercial & Industrial, the makers of BlueDEF, found that the top concern of those surveyed was how DEF with SCR technology impact overall fuel economy.

117518EBWebblue_00000067522As Diesel Exhaust Fluid (DEF) has become a mandatory commodity for all fleet managers running 2010 EPA-compliant engines, many still have questions about how it impacts day-to-day operations.

In an August 2013 online survey of the trucking industry, PEAK Commercial & Industrial, the makers of BlueDEF, found that the top concern of those surveyed was how DEF with SCR technology impact overall fuel economy.

Respondents were provided the following choices and asked to rank their top concerns with DEF usage:

• Performance in freezing temperatures

• Effect on fuel economy

• Additional cost to overall maintenance budget

• Proper storage

• Ease of accessibility (finding it when you need it)

• Contamination (using the right accessories)

Not surprisingly, fuel economy ranked number one with the highest overall ranking, followed by added maintenance costs and performance in freezing temperatures. Dr.Frank Cook, senior vice president of New Product Development with PEAK Commercial & Industrial explains more about the fuel efficiency side of DEF:

“With the use of DEF with SCR technology, the engine can be tuned to run at optimal conditions, which gives a more complete fuel burn and better fuel economy,” said Cook.

Understanding there are questions about the trade-off of additional DEF cost versus fuel saved, Cook provided this breakdown:

• If you get better fuel economy as a result of SCR engines and save 3%, that would be three gallons of diesel at $4.00 a gallon for every 100 gallons of fuel (about $12 saved)

• At a 3% treat rate you would use 3 gallons of DEF for that same 100 gallons of fuel (about $8.37 spent)

• Since DEF is less than the cost of diesel, operating costs are actually lower. For every dollar spent on DEF, it is about 40-50 cents less you are spending on diesel fuel, which is a solid return rate.

Cook added that you typically only have to fill your DEF tank once every 6,000 miles, which can be via truck stop pumps, company storage containers or retail containers.

“We’ve been supplying functional fluids to major companies worldwide for years under our well-known PEAK brand, so when DEF came along, we made sure that our customers were well supported with this new product,” said Cook. “We have 99.3 percent on-time delivery rates for all of our products and are one of the top DEF suppliers in the industry.”

For more information, visit:


You May Also Like

Dayco to Offer eXtra Loyalty Program

Shops can earn points for Dayco kit and water pump purchases.

Dayco, an engine products and drive systems supplier for the automotive, industrial and aftermarket industries, has become a partner brand for the industry’s eXtra loyalty program.

eXtra is a multi-brand loyalty offering geared toward automotive repair shop owners that allows them to buy, earn and redeem points without cutting box tops or tracking sales. It currently has 17,000 participating shop owners in the U.S. and Canada, and is growing rapidly.

Sick Week 2024 Results

Sick Week 2024 definitely didn’t disappoint! See the results.

Isky Racing Cams’ Ron Iskenderian Has Passed Away at 75

Ron Iskenderian, the son of industry icon Ed Iskendarian and the former vice president of Isky Racing Cams, has passed away at the age of 75. He was the eldest son of Ed and Alice Iskendarian.  Related Articles – MPMC Media Trade Conference to Relocate in 2025 – Mobil 1 Celebrates 50th Anniversary – Lewis

MPMC Media Trade Conference to Relocate in 2025

The SEMA Motorsports Parts Manufacturers Council (MPMC) Media Trade Conference, the aftermarket’s premier conference for establishing connections between motorsports parts manufacturers and media professionals, is relocating from Los Angeles, California to Orlando, Florida in 2025.  Related Articles – Formula 1 Rejects Andretti and Cadillac – Nasr Victorious at Rolex 24 for Penske, Porsche – Competitors

Mobil 1 Celebrates 50th Anniversary

In 2024, ExxonMobil will commemorate its 50-year history of the Mobil 1 brand with a series of initiatives across partnerships, motorsports, and virtual reality, each of which will highlight the brand’s legacy and what’s to come. Related Articles – Hot Rod Drag Week 2024 to Celebrate 20th Anniversary – Engine Builder Hall of Fame Names

Other Posts

Scheid Diesel’s Billet Cummins Dragster Engine

One of the coolest diesel dragsters around belongs to Scheid Diesel. Shop owner Dan Scheid and machinist and drag racer Jared Jones work together on the billet Cummins-powered dragster. We caught up with Jared during the 2023 Ultimate Callout Challenge to get the details of what makes their Cummins engine tick in this Diesel of

Scheid Cummins engine
415 cid Billet Cummins Engine in a Pro275 Cadillac

Ring Racing owner Jared Ring revealed a metamorphosis to this 2016 Cadillac ATS-V last week. The Cadillac is now equipped with radial tires and a 415 cid Cummins engine built by Freedom Racing Engines, and the combo just competed at Lights Out 15.

Cummins-powered Cadillac ATS-V Pro275 drag car
Paul Vasko’s LML Duramax-Powered Diesel Dragster

During our weekend at the 2023 Ultimate Callout Challenge, there were plenty of fun conversations, but speaking with drag racer Paul Vasko was definitely a highlight. His passion is contagious, and his diesel dragster is definitely badass, thanks in part to a turbocharged LML Duramax engine. It’s our Diesel of the Week brought to you

Paul Vasko LML Duramax
Turbocharged 5.9L Common Rail Cummins Engine in a 1947 Ford

After sitting in his father-in-law’s backyard for a number of years, this 1947 Ford was gifted to Chase Wells’ wife. Chase owns 1 Way Diesel Performance and knew someday he’d bring the truck back to life. He did so using a 5.9L common rail Cummins engine on a special episode of Texas Metal’s Loud and Lifted. Check out the result.