- Detect abnormal wear and component degradation before equipment failure occurs
- Identify contamination issues of water, fuel, and metals that compromise oil performance
- Extend equipment lifespan through data-driven maintenance planning
- Reduce downtime and prevent costly emergency repairs through predictive insights
Your Colorado Partner for Equipment Reliability
We’ve spent years analyzing oil samples from construction equipment battling Lakewood’s altitude and temperature swings, fleet vehicles grinding through daily routes, and backup generators sitting idle until they’re desperately needed. Our lab-certified analysis doesn’t just tell you if your oil is “good” or “bad”—it provides specific readings on viscosity, contamination levels, and additive depletion that guide real maintenance decisions.
Fleet Core understands Colorado operations. We know that Lakewood’s proximity to the foothills means dust infiltration issues. We recognize that equipment here faces wider temperature ranges than coastal facilities. And we’ve seen how altitude affects everything from combustion efficiency to moisture accumulation. Our analysis accounts for these regional factors because generic lab reports miss the context that matters.
When David Chen needs to verify his hospital’s backup generators are ready for the next power outage, or Mike Reynolds wants to know if his excavator can finish the season without a rebuild, they’re not looking for textbook answers. They need someone who understands their equipment operates in Lakewood, not a laboratory. That’s the difference between data and actionable intelligence.
Who We Serve
Lakewood Industries That Can’t Afford Unexpected Failures
Fleet Core supports operations where equipment downtime means lost revenue, missed deadlines, or safety concerns. Our engine oil analysis serves businesses that need reliability more than a short cost savings. Because the real cost isn’t the test, it’s the failure you didn’t prevent.
Fleet and Facilities Management
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Fleet and Facilities Management
Your Challenge
Contaminated oil and liquids disrupt fleet schedules, impact component failures, advance wear and tear, and accelerate maintenance and replacement costs.
Our Solution
Regular oil and lubricant testing maintains clean oil and fluid systems for operational uptime, prevents contamination, extends engine, transmission, and hydraulics life, and lowers vehicle repair costs.
Project and Construction Site Management
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Project and Construction Site Management
Your Challenge
Oil and liquid-related equipment downtime can delay critical projects and timelines.
Our Solution
Prevent issues with tested and certified oil and liquids required for heavy equipment operation—prevent unexpected downtime and disruption and extend equipment life and performance.
Engineering and Operations Management
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Engineering and Operations Management
Your Challenge
Exposure to productivity disruptions, equipment breakdowns, production schedule delays, etc.
Our Solution
Proactive diagnostics yield actionable insights, safer asset management, and data-driven predictive maintenance schedules.
Environmental Compliance Management
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Environmental Compliance Management
Your Challenge
Exposure to penalties for non-compliance due to oil waste and environmental impact.
Our Solution
Our oil analysis pinpoints issues early, helping you extend oil change intervals, protect engine investment, and limit environmental impact risks.
Why Choose Us
Owner-Operated Commitment to Keeping Your Equipment Running
Fleet Core brings experience to Colorado fuel and fluid management to every oil sample we analyze. We’re owner-operated, which means when you call with questions about your test results, you’re talking to people who understand both the chemistry and the consequences—not a call center reading a script.
Prevent Catastrophic Failures
- Detect bearing wear, cylinder scoring, and ring damage before they destroy engines
- Identify coolant leaks that lead to catastrophic overheating
- Catch fuel dilution that indicates injector problems or incomplete combustion
Extend Equipment Lifespan
- Optimize oil change intervals based on actual degradation, not guesswork
- Reduce wear rates by addressing contamination sources immediately
- Document maintenance history that preserves resale value
Control Operating Costs
- Eliminate unnecessary oil changes that waste money and downtime
- Schedule repairs during planned maintenance windows, not during critical operations
- Reduce parts inventory by knowing exactly what’s failing and when
Meet Compliance Requirements
- Provide lab-certified documentation for environmental audits
- Track fluid disposal and replacement with detailed records
- Demonstrate equipment reliability for insurance and regulatory reviews
Complete Fuel and Fluid Management Solutions
Fleet Core delivers integrated energy solutions across the Front Range. From diesel delivery and bulk lubricants to fuel polishing and comprehensive fluid analysis. We’re not just testing your oil; we’re managing your entire operational fluid ecosystem.
Fuel Delivery
Reliable Supply Without the Supply Chain Headaches
On-site diesel and gasoline delivery keeps equipment fueled without downtime for refueling runs or exposure to contaminated station fuel. We deliver clean, tested fuel directly to your Lakewood location on your schedule, including emergency deliveries when operations can’t wait.
Diesel Fuel Testing
Verify Your Stored Fuel Before It Damages Equipment
Fuel testing analyzes diesel and gasoline samples for water content, microbial contamination, and chemical degradation that compromise performance. Testing stored fuel prevents the exact contamination issues that show up in oil analysis, it’s addressing problems at the source rather than treating symptoms.
Fuel Polishing
Remove Contaminants Before They Reach Your Engine
Fuel polishing eliminates water, sludge, and microbial growth from stored diesel before it enters your equipment. Clean fuel means fewer filter changes, better combustion, and oil that stays cleaner longer because it’s not compensating for contaminated fuel.
Fuel Storage Tank Clenaing
Eliminate the Source of Fuel Contamination
Tank cleaning removes sludge, water, and microbial colonies from fuel storage systems that contaminate every gallon you use. Clean tanks mean clean fuel, which means engines that run properly and oil that doesn’t get overwhelmed fighting contamination from bad diesel.
Spill Cleanup
Fast, Effective Spill Response For Spills that Can LInger
Petro Buster tackles oil spills, fuel leaks, and petroleum residue without harsh chemicals that damage equipment or complicate disposal. It breaks down hydrocarbons quickly, meeting environmental standards while protecting your site from contamination penalties and the kind of mess that shuts down operations.
Engine Oil Testing & Analysis
See Equipment Failures Coming Before They Cost You
Oil analysis reveals metal particles, coolant intrusion, and additive depletion that indicate impending failures. Testing catches connecting rod wear, head gasket leaks, and filter bypass conditions while they’re still manageable. And turn catastrophic breakdowns into scheduled maintenance that doesn’t halt your operations.
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.”