TOP TIER™ Detergent Gasoline


Cenex Top Tier
Automatic Maintenance for More Worry-Free Mileage

Cenex® TOP TIER™ Detergent Gasoline maintains vehicles automatically. With two and a half times more detergent than regular fuel, it maximizes performance and efficiency for a cleaner engine and fewer trips to the mechanic. Every fill-up is like a tune-up.* Cenex TOP TIER Detergent Gasoline is here.

*Use of Cenex TOP TIER Detergent Gasoline is not a substitute for an actual tune-up or other regular maintenance.


Standard in every grade of Cenex gasoline without an increase in price.
Formulated for every engine, including today’s sophisticated engines as well as legacy engines.
TOP TIER is certified to exceed EPA detergent requirements through four rigorous tests.
Highly recommended by seven out of the top ten automakers.
2.5x the cleaning power of regular fuel, which removes deposits left behind by other gasoline and cleans dirty intake valves and fuel injectors.
Easy automatic maintenance, which can lead to fewer trips to the mechanic.*
Easy to find; available in 19 states and at 1,500 locations.
Restores engine power with improved fuel economy, better drivability, maintained optimal injector performance and minimized emissions.

Quick Answers to Some of Your Questions

  • How does gasoline become TOP TIER™ certified?
    Cenex locations are registered TOP TIER retailers, which means our gasoline has been tested and certified by the TOP TIER program to exceed EPA detergent requirements.
  • How is it different from regular fuel?
    Cenex TOP TIER Detergent Gasoline has two and a half times the cleaning power of regular fuel to maximize engine performance and optimize fuel efficiency.
  • Does it cost more than regular fuel?
    At all Cenex stations, TOP TIER Detergent Gasoline is offered at no additional cost to your customers.
  • How do customers know I am selling TOP TIER?
    Upon completion of a TOP TIER license agreement, your licensed brand names will be added to the TOP TIER website. The TOP TIER logo must be displayed at your service stations. You are also able to use approved TOP TIER merchandise and advertise your fuel is TOP TIER licensed.
  • Can any car use Cenex TOP TIER Detergent Gasoline?
    Yes, Cenex TOP TIER Detergent Gasoline is compatible with any car that runs on gasoline.

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