PLUS Gasoline - Quality Fuels - Quality Performance

If you're looking for optimal gas mileage and engine performance, look no farther than CountryMark's lineup of all-American PLUS gasolines. All of the gasolines in the CountryMark PLUS line meet TOP TIER standards, which keep engines running smoothly, improve engine performance and reduce vehicle emissions.
These 100% American-made gasoline products begin with American crude oil and are refined to the highest specifications at the CountryMark refinery in Mt. Vernon, Indiana.
For fast starts, quick warm-ups and less vapor lock, all CountryMark gasolines are seasonally blended.

For different vehicle requirements, CountryMark PLUS gasolines come in various octane grades, including regular (87 octane), mid-grade (89 octane), and premium (93 octane). These products are TOP TIER certified, and oxygenated with a 10% ethanol blend, which increases octane, improves engine performance and reduces exhaust emissions.

CountryMark also makes available a 91 octane product. This mid-grade fuel is TOP TIER certified and ethanol free, making it a superior fuel choice for boats, outdoor power equipment and high performance engines. 

For Flex Fuel Vehicle owners, CountryMark offers E85.

Ready to see where All-American CountryMark PLUS gasolines can take you? Visit our growing list of CountryMark retail fuel stations that offer these fuels at the pump, or contact a CountryMark branded dealer to discuss fuel delivery options.



CountryMark CEO Named Outstanding Chemical Engineer
CountryMark President and CEO Charlie Smith recently received the 2015 Purdue University School of Chemical Engineering's Outstanding Chemical Engineer Award.
CountryMark Employees Share Illinois Basin Oil Story with Local Students
Three of our team members recently took a break from their regular jobs to talk with 5th graders about Illinois Basin crude oil and how CountryMark, produces crude oil. Thank you Frank Lindsey, Steve Gossman, and Chuck Venditti for sharing what we do at CountryMark with the young people in the communities we serve.
Six Things You Didn't Know about TOP TIER Gasoline
TOP TIER gasoline is a better fuel for engines, and takes the mystery out of what a good fuel is and what an average fuel is.
Celebrating 75 Years of Refining Excellence
By celebrating our 75th, we're honoring generations of talented employees who have devoted their careers to refining excellence under the CountryMark name.
Fulton County residents enthusiastic about county’s first CountryMark fuel station
Fulton County, Indiana, has its first CountryMark-branded retail fuel station. The site recently opened at 312 North Troutman Street in Kewanna.

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