One Stop Shop For Your Fuel Related Needs
Fluids for your FleetWhat sets Fleet Core apart from our competitors is that we are not just an aggregator or middleman. We are a full-service provider that owns and operates our own fleet of delivery vehicles and equipment.
Experience the Fleet Core Difference
What sets Fleet Core apart from our competitors is that we are not just an aggregator or middleman. We are a full-service provider taht owns and operates our own fleet of delivery vehicles and equipment. This means that when you work with us, you can expcet a direct and personalized service experience.
We have been serving the Denver region for many years, and have built a reputation for excellence in the industry. Our team of experienced professionals is dedicated to ensuring that you receive the highest level of science and support, every step of the way.
We take pride in being one of the few companies in the region that provides the full range of fuel services. Our commitment to quality, reliability, and customer statisfaction has earned us the trust and loyalty of many businesses in the Denver region.
Our Services
On-Site Fuel Delivery
Ensuring a consistent, reliable fuel supply is critical to keeping your operations running smoothly and efficiently
Bulk Oil Delivery
Offering a diverse selection of motor oils and lubricants to suit your business’s every need
Fuel Polishing
Discover the benefits of fuel polishing, why it’s essential for your business, and why Fleetocre is the right choice for your fuel maintenance needs.
Diesel Tank Cleaning
We help businesses in Denver and the surrounding areas maintain the cleanliness and integrity of their diesel storage tanks.
Fuel Tank Leasing
You can gain access to high-quality fuel storage tanks and equipment, complete with pump, filter, hose, and remote monitoring, without the upfront cost of purchasing them outright.
Diesel Fuel Testing
Learn more about the importance of diesel fuel testing, the regulatory compliance requirements, and the types of facilities that can benefit from our services.
Certifications and Accreditations






Disaster Preparedness: The Critical Role of Emergency Fuel Delivery in Contingency Planning
In an increasingly unpredictable world, disaster preparedness has become a focal point for businesses across sectors. From hurricanes to power outages, unexpected events can disrupt operations and bring about significant economic losses. For businesses relying heavily...
Predictive Maintenance and Fuel Tanks: Unpacking the Benefits
In an era where technology is evolving rapidly, the way we maintain and manage assets like fuel tanks is also changing. Predictive maintenance, powered by artificial intelligence (AI) and machine learning, is paving the way for more effective and efficient maintenance...
Sustainable Fleet Fuel Management: Exploring the Intersection of Efficiency and Environment
In recent years, the fleet industry has experienced a remarkable shift, pivoting toward sustainable and environmentally friendly practices. The growing societal consciousness about environmental conservation has permeated various sectors, and fleet fuel management is...
Demystifying Fuel Quality: Understanding the Nuances of Fuel Testing
Fuel is the lifeblood of our modern world, powering everything from our vehicles to the generators that ensure business continuity. However, just as with any lifeblood, the quality is critical. Impure or low-grade fuel can result in reduced performance, increased...
The Evolution of Fuel Management: A Look at the Last Decade
The last decade has been a transformative period for the fuel management industry, characterized by significant technological advancements, regulatory changes, and a growing focus on sustainability. Fuel management has evolved from a simple process of tracking fuel...
All you need to know about Ultra-Low-Sulfur Diesel
Diesel fuel, a significant contributor to the operation of the global transport industry and industrial machinery, has not always been the most environmentally friendly option. Notably, its high sulfur content was associated with widespread air pollution, impacting...
Testimonials
Great company and great service!! Employees are well trained and very professional!!
—Chris
Fleet Core offers excellent customer service. They complete the commitments they make and take care of their clients.
—Brian
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.
—Zach
Quick and efficient on-site fuel delivery.
—Harry