Fuel Delivery, Propane, DEF and Lubricants in Wisconsin and the UP

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Trusted Partner
Focused on the future.

You rely on us to provide you innovation and the best energy products and services in the industry. We want to be your trusted partner. Insight FS continually takes steps to ensure we can take advantage of future opportunities through a strong financial position, operating efficiency, and maintaining critical volume of products you need to be successful. We are here to be your first provider of fuels, lubricants, propane and additives. If you need it, we can get it. 


Since the 1920s, the FS System has been delivering fuels across the Midwest. Today, the FS System is a leading supplier of refined and renewable fuels to a wide range of accounts including farmers, truckers, construction companies, municipalities and more. Sales of Dieselex® Gold, the premium diesel fuel with origins back to 1952, are growing rapidly as users experience the benefits of using the latest in fuel-additive chemistry. In fact, it was one of the first fuels to be recognized in the Top Tier Diesel Fuel program. We deliver fuels and bulk lubricants where and when you need them. 


It takes a lot of different greases and lubricants to keep today's equipment up and running. The key to doing it efficiently and cost-effectively is matching the best products for the equipment and the application. That's why our Insight FS Energy Specialists conduct an on-site assessment to make sure you get just the right products to deliver optimum performance and efficiency of your tractors, trucks, industrial machinery and other equipment. Our bulk lubricants can be delivered right where and when you need them. 

DEF, Coolants and More
It takes more than fuel and engine oil to keep today’s machinery operating at its best. That’s why we offer a wide range of other products including diesel exhaust fluid (DEF), anti-freeze/coolants and grease. Not only can our energy specialists recommend the best products for your needs, we can also recommend the most efficient way to handle and store them.

Nearly 300 locally owned and operated FAST STOP® and FAST STOP® Express locations across the Midwest offer quality diesel fuel and gasoline as well as ethanol and biodiesel blends. Many locations feature convenience stores and other travel related services.

Residential Propane
In more than 48 million U.S. households, families enjoy the comfort, convenience, and efficiency of propane energy. The reasons for propane’s popularity are simple: propane emits less than half the greenhouse gas emissions of electricity to produce the same amount of energy. That's an impressive statistic given that more than 40% of the electricity in the U.S. is currently produced by coal-fired power plants. In colder climates like Wisconsin, high-efficiency propane-fueled furnaces produce half as many carbon dioxide emissions as electric air source heat pumps. Making propane the more environmentally-friendly choice. 
Commercial Propane
Propane is a highly economical, efficient, and environmentally friendly option for businesses and communities. Using propane as a fuel source not only reduces operating and maintenance costs but also improves marketability by showing a commitment to protecting the environment and public health while acting to reduce the country’s dependence on foreign oil and create more American jobs. Let's talk about how you can improve your business with propane this year!
Agricultural Propane
At Insight FS, we want to fuel your farm, while providing you with an economical, environmentally-friendly and efficient means of energy. You can use propane for a number of applications, including: grain drying, livestock operations, irrigation pumps, weed control, fuel for farm equipment and vehicles, and standby generators.

Propane Autogas
Choosing propane autogas has never been easier. Propane autogas burns cleaner than gasoline or diesel—which means fewer emissions—and is non-toxic. In addition, it is cheaper and easier on engines, which means not only lower fuel costs but also savings on maintenance costs and longer engine life. Because propane qualifies as an alternative fuel source, businesses and organizations using propane autogas are also eligible for various tax credits, rebates, and incentive programs. 

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We have revised our Privacy Policy and Terms of Use.

Please read both of these documents as the changes affect your legal rights. By continuing you agree to these updates.