
Benefits of Buying Your Fuel Direct
- Guaranteed & Consistent Fuel Quality
- No Added Fees or Middlemen Markups
- Reliable Fuel Delivery with 24/7 Support
- Integrated Fuel Services – Run, Store, Manage

We Know Fuel. We Know Broomfield.
Fleet Core Inc. has spent years becoming the energy partner that Colorado operations trust when uptime matters. We’re not just moving fuel from point A to point B—we’re preventing the operational hiccups that kill productivity and drain budgets. Whether you’re managing heavy machinery on a construction site, coordinating a fleet of trucks, keeping backup generators ready for storms, or running seasonal agricultural operations, we understand the specific pressures that come with operating in the Broomfield area and across Colorado’s Front Range.
Our expertise runs deeper than delivery schedules. We’ve built our reputation on knowing what your equipment needs, when it needs it, and how to keep it running clean. We handle the fuel management complexity so you can focus on your actual work. That’s the difference between a fuel supplier and an energy partner—and it’s a difference our Broomfield clients feel every single day.
Why Choose Us
We Get It: You Need Reliability, Not Excuses, and Without Added Costs

Fleet Core brings over a decade of energy partnership experience to every Broomfield client relationship. We’ve earned our reputation through consistent delivery, transparent communication, and a genuine commitment to your operational success.
Eliminate Costly Downtime
- No more equipment sitting idle waiting for someone to make a fuel run
- Pre-scheduled deliveries mean you’re planning around productivity, not scrambling for diesel
- Emergency response available 24/7 because generators and snow removal don’t wait for business hours
Optimize Operational Costs
- Bulk delivery pricing beats retail pump rates
- Reduced labor costs when crews aren’t driving to fill up tanks
- Digital tracking reveals consumption patterns that help you budget accurately
Gain Long-Term Energy Confidence
- Owner-operated commitment means consistent service, not rotating vendors
- Fuel quality programs that prevent contamination before it damages equipment
- Partnership approach that scales with your operational growth
Ensure Regulatory Compliance
- Proper documentation for tax reporting on dyed diesel and off-road fuel
- Delivery protocols aligned with EPA and Colorado environmental standards
- Spill prevention and response support for municipal accountability requirements
Your One-Stop Shop for All Things Fuel and Lubricants
Diesel Fuel Testing
Know Your Fuel Quality Before Problems Start
Testing catches contamination early. Water intrusion, microbial growth, filter-clogging particles, so you address issues before they snowball into equipment failures. Our Diesel Fuel Testing service gives you the data to make smart decisions about fuel health and storage conditions. When you know your fuel is clean, you can stop worrying and focus on operations.


Fuel Polishing
Keep Your Fuel Clean and Keep Your Operations Running Smoothly
Over time, fuel tanks accumulate water, sediment, and microbial growth. These problems that sneak up quietly until they break down injectors or halt generators at the worst moment. Our Fuel Polishing service removes contaminants before they cause expensive damage, extending equipment life and preventing the kind of emergency shutdown that derails schedules. When your mission-critical systems depend on clean fuel, preventative polishing isn’t a luxury—it’s insurance.
Tank Cleaning
Remove Years of Buildup for Better Running Fleets and Equipment
Fuel storage tanks accumulate sludge, water layers, and bacterial growth over years of operation. Our Diesel Tank Cleaning service removes all that buildup, restoring tank integrity and fuel quality in one thorough process. You get a clean slate—literally—which means better fuel performance, fewer contaminant problems, and extended tank life. It’s one of the smartest maintenance decisions you can make for long-term operational reliability.


Spill Cleanup
Take Fast Action When Spills Happen With Petro BusterEco-Friendly Cleaning Solutions
Despite your best efforts, fuel and petroleum spills will happen. From minor drips and equipment failures to accidental overflows. Our Petro Buster Petroleum Cleaner & Degreaser tackles these messes with an industrial-strength formula that actually works, breaking down oil and fuel residues without harsh chemicals that damage surfaces or harm the environment. It’s fast, effective, and leaves your site clean and compliant, reducing liability and keeping operations moving.
Oil Analysis
See Inside Your Engine Before Damage Happens
Engine oil tells a story. With an oil analysis, we will identify wear particles, contamination levels, and viscosity breakdown. Each piece of information tells a story of what’s happening inside equipment. Our Engine Oil Testing & Lubrication Analysis service decodes that story, helping you catch early wear patterns and address them before they turn into catastrophic failure and downtime. For seasonal equipment and mission-critical machinery, regular oil analysis is predictive maintenance that actually prevents expensive surprises.

Who We Serve
Energy Reliant Broomfield Businesses That Can’t Afford Downtime
From construction sites pushing heavy equipment to completion deadlines, to fleets crisscrossing Colorado, to hospitals and data centers where backup power is life-or-death critical, to family farms managing seasonal fuel demands—Fleet Core partners with Broomfield operations that depend on fuel reliability. We understand the specific challenges of operating in northern Colorado, from weather patterns to altitude effects on fuel performance to the logistics of coordinating across rural and urban terrain.

Fleet Management
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Fleet Management
Your Challenge
Ensuring optimal fleet uptime and performance without disruptions and escalated costs
Our Solution
Reliable delivery and clean, high-performance lubricants and fluids that minimize wear, reduce sludge, meet regulatory guidelines, and keep your fleet running smoothly

Construction Site Management
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Construction Site Management
Your Challenge
Managing remote sites, with rigorous timelines, requiring uninterrupted fuel-dependent operations, needing multiple essential fluids solutions
Our Solution
Integrated essential fluids offerings aligned to site schedules, equipment needs, operational demands, and budget requirements

Project Management
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Project Management
Your Challenge
Managing tight timelines, defined budgets, environmental regulations, safety requirements, and performance expectations
Our Solution
Flexible, on-site delivery options, integrated essential fluids solutions, and cost-effective performance-enhancing products
Our Value
Confidence. Control. Continuity.
Protect Your Equipment With Our Essential Fluid Services
You’ve got enough to manage without fuel problems becoming your problem. Fleet Core handles the fuel complexity so you can focus on what you actually do—whether that’s building, transporting, healing, or growing. When you work with a local energy partner, you get someone invested in your success, not just your transaction. That’s what we deliver in Broomfield, every single day.

Lubrication
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Lubrication
- Lubricate engine components
- Minimize friction
- Prevent damage from metal-on-metal contact

Cooling
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Cooling
- Cool engines
- Absorb heat
- Prevent breakdown and failure

Washer Fluid
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Washer Fluid
- Crystal clear operator vision
- Vehicle safety
- Winter operations protection

Emissions Compliance & Performance
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Emissions Compliance & Performance
- Improve performance
- Eliminate smog and illness
- Maintain regulatory compliance
Testimonials
Our Commitment To Excellence
Fleet Core is more than just a fuel and fluid provider — we are your comprehensive ENERGY PARTNER supporting operational reliability, productivity, and sustainability.
“Great company and great service!! Employees are well trained and very professional!!”
“Fleet Core offers excellent customer service. They complete the commitments they make and take care of their clients.”
“Great Diesel and Service. Extremely low temps and Core Power didn’t let me down. I would recommend Fleet Core and Core Power diesel to anyone in the Denver area.”
“Quick and efficient on-site fuel delivery.”