Diesel exhaust fluid

Your Trusted Partner in DEF

Our commitment to excellence ensures that your equipment is well-equipped to meet and exceed DEF standards. At Senergy, we pride ourselves on delivering the highest quality DEF products, ensuring that you not only comply with regulations but also optimize your engine performance. 

Detailed Reporting

A detailed invoice sent directly to your account after every single purchase when using a Senergy Cardlock card.

We Offer:

Diesel Exhaust Fluid continues to grow in demand and you are seeing more of your equipment require it. Federal mandates for exhaust emissions continues to expand. Are you handling DEF correctly? Is your storage system reducing your DEF shelf life or adding contaminants?

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Top Grade

Diesel Exhaust Fluid is a key component to modern diesel engines and only the highest purity will have maximum effectiveness.


Senergy understands the effectiveness of DEF depends on its cleanliness. The smallest impurity can contaminate thousands of gallons. Senergy’s internal process ensures the best quality of product is transferred expertly from our tanks to your inventory. 


Formulated with the highest-grade urea and deionized water, our DEF guarantees optimal performance in SCR systems, protecting your engines against impurities and corrosion.

Flexibility Tailored to Your Needs: Package to Bulk

We offer the flexibility to choose how you want your DEF delivered – in bulk for the heavy hitters or in smaller packages for businesses on the move. 

Bringing DEF Directly to You!

Our cutting-edge Senergy DEF trucks are on the move, ready to deliver DEF wherever your operations take you. Say goodbye to logistical challenges – we bring DEF to your doorstep, whether you need it in bulk or smaller packaged quantities. 

Your Assurance of Quality

Our DEF adheres to the rigorous standards set by ISO 22241-1, ensuring unmatched purity and consistency. With Senergy, you get DEF that’s not just fuel; it’s a commitment to excellence that keeps your engines running at their best.

A Stamp of Approval from the Experts

Backed by the American Petroleum Institute’s seal of approval, our DEF has been meticulously tested and certified. This means you’re not just getting a fluid; you’re getting a solution that meets and exceeds industry benchmarks for quality, performance, and environmental responsibility.

From Bulk to Gallon and Everything In-Between!

Whether you’re a fleet manager, an individual consumer, or anything in between, Senergy has you covered. Our DEF is available in bulk for the big players and gallon containers for the everyday heroes. We offer a comprehensive range of package sizes to suit your specific needs.

Request a DEF Quote today

All Package Sizes
From Bulk To Gallon!

By offering DEF in different package sizes, Senergy Petroleum ensures flexibility and accessibility for a wide range of customers. This flexibility is crucial in the DEF market, where different industries and users have distinct requirements.

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Senergy has been the distributor of choice in the Southwest and Rockies for decades. We only carry the highest quality products at the most competitive price possible. Our brands themselves are market leaders offering a variety of options and price points.

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