The Benefits of Buying Your Fuel Direct from Fleet Core
- Guaranteed & Consistent Fuel Quality
- Direct Supplier Pricing – No Middleman Markup
- Quality-controlled – Tested and Monitored
- Local Expertise with Flexible Delivery
Golden’s Trusted Partner for Commercial Fuel Delivery
We’ve built Fleet Core around a simple idea: businesses deserve better than dealing with distant brokers who don’t understand Colorado operations. Our team knows the terrain between Golden and Commerce City like the back of our hands, and we’ve watched this region grow alongside the operations we serve.
Every delivery comes from our own trucks, monitored by our own team, following protocols we’ve refined over years of serving everything from construction sites off Highway 93 to fleet operations near the Table Mountain area. When Golden businesses need fuel, they’re calling an owner-operated company that treats each delivery like it matters. Because honestly, it does.
We’re not just dropping off diesel and driving away. Whether you’re fueling excavators on a site near Lookout Mountain or keeping a municipal fleet running through winter, we’re making sure the fuel quality matches what your equipment needs and your schedule demands.
Why Choose Us
What Makes Direct Supply Different
We’ve watched national brokers promise the moon and deliver headaches, often resulting delayed shipments, inconsistent quality, customer service that vanishes when problems arise. As a Colorado-based, owner-operated supplier, we’re accountable for every gallon that leaves our trucks, and that changes everything about how fuel delivery works.
No Broker Middlemen Means Real Savings
- Direct pricing structure without layered markups
- Transparent invoicing that matches what you ordered\
- Volume discounts negotiated directly with your operation
- Predictable costs that help you budget accurately
Quality Control From Source to Delivery
- Fuel testing and monitoring at every stage
- Storage protocols that prevent contamination
- Delivery equipment maintained to strict standards
- Documentation and compliance support included
Local Responsiveness That Actually Works
- Same-day emergency delivery available across Golden
- Real people answering phones, not call centers
- Knowledge of local job sites and access routes
- Relationships built over years, not transactions
Comprehensive Fuel Management Support
- Scheduled delivery programs tailored to your usage patterns
- Storage system maintenance and monitoring
- Fuel quality testing and analysis services
- Winter additive programs for Colorado conditions
Complete Fuel System Management From Storage to Analysis
Diesel Fuel Testing
We Can Tell You Exactly What is In Your Stored Fuel
Testing reveals contamination, water intrusion, and fuel degradation before they cost you thousands in repairs or lost time. Our analysis gives you the data you need to maintain quality standards and catch issues while they’re still manageable.
Fuel Polishing
Clean Fuel Protects Your Equipment
Contaminated diesel wrecks engines, clogs filters, and leaves you scrambling for repairs when you least expect it. Our fuel polishing removes water, sludge, and microbial growth before they damage injectors or shut down generators, keeping stored fuel ready when you need it most.
Tank Cleaning
Remove Sludge and Contamination from Storage Systems
Fuel storage tanks accumulate sediment, water, and biological growth over time, all of which compromise fuel quality and system reliability. Professional tank cleaning restores storage integrity, eliminates contamination sources, and protects the fuel you’re paying for.
Eco-Friendly Oil & Fuel Cleanup
Be Prepared for Fast Response to Spills and Leaks
Petro Buster handles petroleum spills without harsh chemicals, breaking down oil and fuel contamination quickly while protecting surfaces and the environment. It’s the cleanup solution fleet managers and site supervisors trust when accidents happen. Because they always do eventually.
Oil Analysis
Extend Equipment Life Through Predictive Maintenance
Running oil analysis on your vehicles and critical equipment reveals exactly what’s happening inside those engines and hydraulic systems—wear metals, contamination, viscosity breakdown, coolant intrusion. Fleet Core’s lubrication analysis program tracks trends across your fleet, identifying which units need attention before minor issues escalate into major failures. You’re essentially getting an early warning system that lets you schedule maintenance strategically instead of reactively replacing engines.
Who We Serve
Industries That Depend on Reliable Fuel Delivery
Golden’s diverse economy demands fuel solutions that understand everything from construction timelines to municipal service requirements, and we’ve spent years developing expertise across these critical sectors. Our fuel delivery in Golden supports operations that can’t afford downtime, quality issues, or suppliers who don’t show up when promised.
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
Fleet Core delivers more than fuel, we deliver the operational confidence that comes from working with a supplier who understands what’s actually at stake. When your equipment sits idle waiting for a broker’s subcontractor to show up, you’re losing money. When contaminated fuel damages injectors or generators, you’re facing repair bills that dwarf any per-gallon savings.
We’ve structured our fuel delivery solutions around preventing exactly those scenarios. Direct supply means quality control from our storage to your tank. Local operations mean response times measured in hours, not days. Owner-operated accountability means someone actually cares whether your delivery arrives on time.
That’s the partnership difference. Ready to work with a fuel supplier who treats your operations as seriously as you do?
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.”