What We Deliver
Your Local Commercial Fuel Partner, Built on Reliability
Olson Oil is a family-owned commercial fuel supplier trusted across Northern Illinois and Southern Wisconsin.
From daily fleet fueling to emergency generator refueling during outages and severe weather, we support businesses that cannot afford interruption.
We combine local expertise with modern fuel management systems, safety-certified drivers, and responsive 24/7, on-site fleet fueling and same-day service to ensure your operation never runs dry.
Fleet Fueling & Wet Hosting Fuel Service
Eliminate downtime and reduce costs with scheduled on-site diesel fueling for fleets. We bring diesel, gasoline, and high-quality, commercial Diesel Exhaust Fluid (DEF) to help customers keep their modern diesel engines compliant and running efficiently. We keep your trucks and equipment moving with efficient on-site fueling services:
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Direct fueling of fleet vehicles reducing mileage to fuel up
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Jobsite equipment fueling
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Reduced downtime and improved productivity
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Bulk delivery, packaged DEF, and storage solutions
On-Site Fuel Storage & Tank Solutions
From generators to bulk storage tanks, we deliver fuel wherever your business needs it—keeping your operations running without interruption. Flexible tank options to match your operational needs:
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Temporary jobsite tanks
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Permanent on-site storage
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Compliance-focused installation and monitoring
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Tank rental, setup, and maintenance
Emergency & Seasonal Fueling
When others can’t deliver, we do. From polar vortexes to summer storms, our local teams respond faster to keep your operations fueled and running — even in the toughest conditions. Reliable fueling for critical operations that can’t go down:
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Snow removal fleet fueling and winter operations support
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Hospitals & healthcare systems
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Data centers & technology hubs
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Utilities & energy providers
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Critical infrastructure & municipal services
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Fuel Assurance Program (FAP) for guaranteed supply during outages and emergencies
Fuel Monitoring Technology
When we deliver fuel tanks or fill your generators, we install an internal fuel monitoring system that you can access remotely online 24/7.
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Advanced tank monitoring systems with real-time visibility
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Automated reports eliminate manual tracking and human error
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Automated refueling service triggered by low-level threshold alerts
Fuel Testing Service
Fuel quality and fuel testing is a top concern, particularly for government agencies, municipalities that rely on generators, and business owners that expect uninterrupted power. Your business can trust Olson to provide:
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An experienced associate who will collect a sample on-site, send it to our lab, and follow up with a recommendation
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Optimized fuel performance
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Peace of mind through regulatory compliance and mitigated risk
Additives, Lubricants, and Diesel Exhaust Fluid (DEF)
Premium products to keep equipment performing and compliant:
Scheduled service and on-demand replenishment
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Full line of lubricants for trucks and heavy machinery
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DEF delivery for fleets and generator systems, including drums, totes and pump
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Seasonal additives
- Motor oils & lubricants offered in 5 gallon pails, 55 gallon drums, bulk delivery
Gasoline & Diesel Fuel
Olson Oil proudly carries:
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Regular Gasoline (Octane 87)
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Mid-Grade Gasoline (Octane 89)
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Premium Gasoline (Octane 93)
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On- and Off-road K1 (Kerosene)
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On-road #2 Diesel
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Off-road #2 Diesel
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On-road BioDiesel (B17)
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Off-road BioDiesel (B17)
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We offer both clear and dyed diesel
Eco-Friendly Options
Cleaner-burning fuels, biodegradable lubricants, and sustainable solutions for environmentally conscious operations.
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On-road BioDiesel (B17)
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Off-road BioDiesel (B17)
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Ethanol Blends up to E85
Fuel Assurance Program (FAP)
Put your business at the top of the priority list.
Olson Oil’s Fuel Assurance Program (FAP) ensures customers are first in line when it matters most. Designed as a critical part of emergency response planning, FAP provides prioritized delivery within six hours of a request. It’s an ideal solution for organizations with limited on-site storage or strict emergency preparedness requirements.