DIESEL EXHAUST FLUID
MANAGEMENT AND SUPPLY

YOUR GREATEST DEFENSE AGAINST CORROSION, CONTAMINATION & COST

DEF is more than just another fluid to stock

DEF is highly susceptible to contamination, which can be costly to your bottom line.

An SCR system using contaminated DEF will consume more fluid and be less effective at reducing emissions. Over time, contaminated DEF will erode the catalyst, causing the engine to shut down and leaving you idle. Repairs can cost tens of thousands of dollars and it’s likely this damage will not be covered under warranty.

Road king Takes the hassle out of DEF


Road King DEF is API Certified to the highest national purity standards and our DEF handling solutions are ISO-compliant to maintain the precise purity required for use in Tier 4 engines.


DEF Products and Solutions

Road King DEF uses pure, automotive grade urea to improve engine performance while reducing exhaust emissions. Road King DEF meets ISO Standards 22241 for product purity and is certified by the American Petroleum Institute (API).

Our two-jug case (2.5 gallons each) provides quality and convenience for smaller engines. Operators of larger rigs often keep a case or two on hand as a preventive measure.

Case of two 2.5 gallon
(9.5 liter) jugs

Road King’s API-certified DEF is available in 55-gallon drums and can be delivered on-demand or through our scheduled services program. Customers choosing scheduled service qualify for our Keep Full Guarantee.

55-gallon drum
(208.2 liter)

Road King’s 330g tote with the Piusi Pro Dispenser Kit provides a self-contained, closed-system storage solution.This approach maintains product purity at a reduced price-per-gallon. Road King totes also qualify for the Keep Full Guarantee.

330 gallon (1,249 liter) closed tote
with Piusi Pro Dispenser Kit

Our 1,200-Gallon bulk DEF system is a functional, self-contained storage solution that can be configured with single- or dual-dispensers; or connected to a retail dispenser. Its 1,200 gallon capacity, combined with Road King’s tank monitoring services, ensures you’ll always have enough DEF on hand and be able to purchase DEF at the lowest rates. All bulk solutions are included in Road King’s Keep Full Guarantee.

1,200-gallon bulk DEF system
(4,542.5 liter)

Case of two 2.5 gallon
(9.5 liter) jugs

Road King DEF uses pure, automotive grade urea to improve engine performance while reducing exhaust emissions. Road King DEF meets ISO Standards 22241 for product purity and is certified by the American Petroleum Institute (API).

Our two-jug case (2.5 gallons each) provides quality and convenience for smaller engines. Operators of larger rigs often keep a case or two on hand as a preventive measure.


55-gallon drum
(208.2 liter)

Road King’s API-certified DEF is available in 55-gallon drums and can be delivered on-demand or through our scheduled services program. Customers choosing scheduled service qualify for our Keep Full Guarantee.


330 gallon (1,249 liter) closed tote
with Piusi Pro Dispenser Kit

Road King’s 330g tote with the Piusi Pro Dispenser Kit provides a self-contained, closed-system storage solution.This approach maintains product purity at a reduced price-per-gallon. Road King totes also qualify for the Keep Full Guarantee.


1,200-gallon bulk DEF system
(4,542.5 liter)

Our 1,200-Gallon bulk DEF system is a functional, self-contained storage solution that can be configured with single- or dual-dispensers; or connected to a retail dispenser. Its 1,200 gallon capacity, combined with Road King’s tank monitoring services, ensures you’ll always have enough DEF on hand and be able to purchase DEF at the lowest rates. All bulk solutions are included in Road King’s Keep Full Guarantee.


Road King’s “Keep Full Guarantee” demonstrates our commitment to helping you maximize productivity. Combining historical consumption data and digital tank monitoring technologies, with the region’s most fluid supply chain, enables us to provide unprecedented service levels. Guaranteed. Once we’ve established your consumption needs, we guarantee you won’t run out of Road King DEF. If by chance you do, we will send you $100. It’s that simple.

About Us

Road King is a wholly-owned subsidiary of Superior Lubricants.

Superior Lubricants, a certified ISO 9001:2008 company, is the premier distributor of lubricants and greases for the automotive, heavy-duty, and industrial industries.

Since 1979, Superior Lubricants has fueled its growth by blending an industry-leading product line with superior service and distribution innovations that increase cycle times while minimizing inventory carrying costs.

Visit Superior Lubricants to learn more.