TOP TIER™ Approved Fuels clean harmful carbon deposits left over in your engine from low-quality gas, restoring performance, fuel economy and drivability—all at no extra cost, in every octane, at …

Jul 7, 2025 · Not all gasoline is created equal. There’s plain old regular, and then there’s regular gasoline that meets a higher standard, known as Top Tier gas.

Enhance your driving experience by downloading the TOP TIER™ Station Finder app, your go-to tool for quickly and easily finding gas stations that offer TOP TIER™ Approved Fuels.

Nov 19, 2025 · For PFI engines (older cars): Yes, absolutely use Top Tier. It’s the simplest, cheapest way to prevent the valve and injector deposits these engines are prone to.

Mar 6, 2025 · Top Tier fuel is gasoline or diesel containing more detergent additives than the Environmental Protection Agency requires. These detergent additives help keep engines clean.

Fuel marketers and retailers voluntarily join the TOP TIER™ program and agree to supply fuel meeting the Performance Standard using TOP TIER™ approved additives at a specified concentration.

Jul 20, 2025 · Top Tier gasoline is a fuel standard that includes several additives developed by Audi, BMW, Chrysler, General Motors, Honda, Mercedes-Benz, Toyota, and Volkswagen in 2004.

Dec 22, 2024 · Top Tier gasoline contains more effective detergents than federally required, which helps clean fuel injectors and reduce harmful carbon deposits inside the engine.

Marathon gasoline is certified TOP TIER™, providing a higher level of STP® detergent additive for an even greater cleaning power. Marathon gasoline fights the accumulation of harmful deposits and …

The new TOP TIER™+ fuel standards are designed for today’s state-of-the-art spark ignited engine technologies, especially high-efficiency GDI (Gasoline Direct Injection) fuel systems coupled with …