- 24/7 Emergency & Scheduled Fuel and Fluid Services
- Guaranteed Quality of CorePower Premium Diesel Fuel
- Real-time Delivery Updates and Transparent Billing
- Integrated Fuel Services – Run, Store, Manage
Built to Power Greeley Businesses
When you call Fleet Core, you’re not getting a broker farming out your order. You’re talking to the owner. The same people who answer the phone load the trucks and stand behind the fuel. That means tighter quality control, faster decisions, and a team that actually knows your account.
Fuel problems don’t wait for convenient timing. Neither do we. Fleet Core has built its name on showing up when it matters, delivering fuel that performs, and solving the kind of issues that can bring an operation to a halt. Your uptime is our responsibility. We take that seriously.
Complete Fuel and Fluid Solutions for Business, Construction, Agriculture, and Essential Services.
Fuel Delivery
On-Site Fuel Delivery That That Keeps You Moving
Professional fuel delivery brings premium diesel, gasoline, and specialty fuels directly to your location, eliminating time-consuming trips to gas stations. Our mobile delivery trucks arrive on schedule, whether you need regular refueling or emergency fuel in the middle of the night.
Diesel Fuel Testing
Kow Your Fuel Quality Before Problems Strike
Comprehensive diesel fuel testing identifies contamination, water content, and additive levels that could damage equipment or cause operational failures. These detailed analyses help you make informed decisions about fuel treatment and replacement before costly repairs become necessary.
Fuel Polishing
Clean Fuel Means Reliable Performance
Advanced fuel polishing removes water, debris, and microbial contamination that naturally accumulates in stored fuel over time. This process extends fuel life, prevents engine damage, and ensures your generators, equipment, and vehicles perform at peak efficiency when you need them most.
Tank Cleaning
Professional Storage Tank Maintenance You Can Count On
Expert fuel storage tank cleaning eliminates sludge, water, and bacterial growth that compromise fuel quality and equipment performance. Our thorough cleaning process includes complete contaminate removal and system testing to ensure your storage infrastructure supports reliable operations.
Spill Cleanup
Be Ready for When Spills Happen
Petro Buster petroleum cleaner tackles oil and fuel spills with environmentally responsible cleaning power that breaks down hydrocarbons safely. This industrial-strength degreaser works fast on everything from minor equipment leaks to larger accidental spills, keeping your facility compliant and clean.
Oil Analysis
Get a Sneak-Peak Into Your Engine’s Health
Comprehensive oil analysis for fleets and generators reveals engine wear patterns, contamination levels, and optimal change intervals through detailed laboratory testing. These insights help you maximize equipment life, reduce maintenance costs, and prevent unexpected failures that could shut down your operations.
Who We Serve
Operational Leaders Depend on Fleet Core’s Essential Fluid Services
To run seamlessly, vehicles and equipment require high performance fluids, regular maintenance, and periodic testing.
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
Colorado businesses demand high performance — Fleet Core Essential Fluid Services support dynamic operational conditions.
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.”