Keeping Fuel Flowing: How Xtreme Heaters Protect DEF Tanks in Diesel Refueling Trucks
When winter hits, keeping diesel refueling trucks and tankers operational depends on more than just grit—it requires thoughtful protection against freezing temperatures. One critical component at risk is Diesel Exhaust Fluid (DEF), which is essential for emissions compliance. If DEF freezes, operations can grind to a halt. That’s where Xtreme Heaters step in.
One of our customers, a leading manufacturer of diesel refueling trucks, relies on Xtreme Heaters to keep their DEF tanks protected. Here’s how we help keep their fleets on the road when the temperature drops.
The Winter Challenge: DEF and Cold Weather
Frozen DEF turns into slush or solid, making it impossible to pump into the SCR system. This can lead to:
- Delivery delays
- Regulatory penalties
- Trucks entering limp mode, restricting speeds to as low as 5 mph
The risk is higher when trucks sit idle, especially with partially filled tanks (which freeze faster) or overfilled tanks (where DEF expansion can cause cracking). These scenarios create expensive downtime and potential equipment damage—challenges no fleet manager wants in the middle of a snowstorm.
How Xtreme Heaters Keep DEF Tanks Functional
Xtreme Heaters offer a rugged, automatic solution to help diesel refueling fleets operate efficiently in cold conditions. Here’s how:
Automatic Temperature Control
Our standard model activates at 40°F and shuts off at 55°F—well above the DEF freeze point—to prevent freezing and ensure DEF flows when needed.
Cold-Climate Option
For extreme environments, a version with a 50°F-on / 65°F-off thermostat provides extra margin against deep freezes.
Energy Efficient Operation
Our heaters maintain critical warmth without drawing unnecessary power—perfect for fleet vehicles with limited electrical resources.
Compact and Durable Design
Built for vibration resistance and confined compartments, the heater fits easily into DEF enclosures and withstands life on the road.
Fast, Flexible Installation
Whether retrofitting existing trucks or outfitting new builds, installation is quick and straightforward—minimizing downtime.
With over 20 years of U.S.-based design and support experience, Xtreme Heaters helps ensure DEF stays ready, trucks stay compliant, and operations keep moving—no matter how cold it gets.
What It Means for Diesel Refueling Operations
DEF protection isn’t just about avoiding frozen fluid. For refueling trucks, it’s about:
- Preventing tank damage
- Avoiding SCR shutdowns and limp mode
- Staying on schedule for critical deliveries
Our heaters help ensure that these vehicles can serve remote sites, infrastructure hubs, and key clients without interruption. It’s one less variable to worry about when managing winter logistics.
Why More Fleets Trust Xtreme Heaters
We’re proud to partner with a major diesel refueling truck manufacturer that integrates our heaters into their vehicles as standard equipment. It’s a vote of confidence that reflects our commitment to reliability, innovation, and real-world performance.
If you’re looking to protect your fleet and prevent cold-weather downtime, Xtreme Heaters offers the proven solution to keep DEF flowing and fuel moving all season long.
Want to learn more?
Visit XtremeHeaters.com, email us at info@xtremeheaters.com, or call 877-360-HEAT (4328) to speak with our team.
