Def on wheels

 Designed for fast, safe refueling of your Fleet, or personal  Diesel Exhaust Fluid needs.  


About Us

How We Handle DEF

DEF, or Diesel Exhaust Fluid, is one third pure ammonia and must be handled and stored safely. We keep our DEF sealed at the recommended 12 to 86 degrees Fahrenheit. Our company uses only sterile, containment free containers for storage and transfer. No additives are required, as DEF must keep a precise mixture of 32.5% high-purity synthetic urea and 67.5% deionized water. In addition to using API (American Petroleum Institute) approved DEF, we field test our DEF using precise refractometers to determine when it is time to replace the fluid based on the concentration of water based solubles. 

 We handle your Diesel Exhaust Fluid needs directly to your vehicles, so there is no need for the safety precautions normally found in this product. Our well trained service technicians will efficiently ensure all of your fleet DEF replenishment. 

Featuring the Piusi Three25 Tote System

Our fluid handling makes use of state of the art technology. Learn more here: 

Specialized Vehicles

DEF On Wheels has been investing in a safe and practical delivery system. Diesel based vehicles consume an average of DEF equal to 2% of the fuel burned. Using this guideline, alongside electronic tracking, our specialized vehicles are designed for fast, safe refueling of your fleet.  


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Contact Us

Drop us a line!

Better yet, see us in person!

We love our customers, so feel free to visit during normal business hours.

DEF On Wheels

6901 McDivitt Dr, suite B Bakersfield, California 93313, United States

(888) 505-7313



9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm