- 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
Keeping Your Fleet Running – No Matter What Is Thrown Your Way
Managing a fleet isn’t a 9-to-5 gig. It’s a constant game of logistics chess, played against Denver’s mountain weather, unexpected delays, and high-stakes delivery schedules. Whether you’re fueling snow plows in the depths of winter or keeping delivery vans humming during the summer rush, one thing’s for sure: you can’t afford to run dry.
That’s where we come in. Our Fuel Delivery and Management Services are designed to keep you ahead of the curve and off the shoulder of I-25 with an empty tank. From on-site fuel drops to tank cleaning and oil and lubrication analysis, we’ve got your back. Around the clock. Across the metro. No excuses.
Your One-Stop Shop for All Things Fuel and Lubricants
Fuel Delivery
Never Run Dry: Reliable Fuel Delivery, Scheduled or Emergency.
Whether it’s diesel for your heavy-duty trucks or gasoline for your service vehicles, we handle it all. Imagine never having to worry about your team wasting time at fuel stations. Our mobile fueling trucks keep your vehicles on the move and your team productive.
Diesel Fuel Testing
Know Your Fuel Quality Before Problems Start
Professional diesel fuel testing identifies contamination levels, water content, and microbial growth before they damage your equipment. Our comprehensive analysis gives you the data needed to make informed decisions about fuel treatment and replacement schedules.
Fuel Polishing
Restore Fuel Quality & Protect Emergency Equipment.
Ensure peak performance of your generators and emergency equipment with professional fuel polishing services. Remove water, sludge, and microbial growth to restore fuel quality and prevent costly downtime.
Tank Cleaning
Prevent Recontamination of Your Mission Critical Fuel
Keep your fuel system clean and efficient with expert tank cleaning services. Eliminate sludge and buildup to prevent recontamination and ensure uninterrupted equipment performance.
Spill Cleanup
Accidents Happen, Eco-Friendly Cleaning Solutions
Ensure peak performance of your generators and emergency equipment with professional fuel polishing services. Remove water, sludge, and microbial growth to restore fuel quality and prevent costly downtime.
Oil Analysis
Identify Breakdowns BEFORE They Happen
Detect early signs of engine wear and contamination with precision oil analysis. Gain insights that help you prevent costly breakdowns and extend the life of your fleet.
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
Learn more →
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
Learn more →
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
Learn more →
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
Learn more →
Lubrication
- Lubricate engine components
- Minimize friction
- Prevent damage from metal-on-metal contact
Cooling
Learn more →
Cooling
- Cool engines
- Absorb heat
- Prevent breakdown and failure
Washer Fluid
Learn more →
Washer Fluid
- Crystal clear operator vision
- Vehicle safety
- Winter operations protection
Emissions Compliance & Performance
Learn more →
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.”