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TOP TIER™ Performance Standards

Gasoline Performance Standard

The TOP TIER™ Detergent Gasoline Deposit Control Performance Standard describes the test methods used and the performance requirements that retail unleaded gasoline must meet to be licensed as TOP TIER™.

Diesel Performance Standard

The TOP TIER™ Diesel Fuel Performance Standard was developed to improve performance, in turn helping the diesel fuel retailers, auto and engine manufacturers, and particularly those who drive or use diesel-powered equipment.

A Higher Fuel Standard

Is TOP TIER™ Better?

What is TOP TIER™ gasoline?

TOP TIER™ Request to Purchase Decals

Fill out this form to obtain the information necessary for purchasing TOP TIER™ decals.

Center for Quality Assurance
Attn: TOP TIER Licensing Program | 4800 James Savage Road | Midland, MI 48642 USA

Becoming a TOP TIER™ Licensee

Fill out this form to obtain the information necessary for becoming a TOP TIER™ Licensee.
For TOP TIER™ Approved Diesel qualification, provide information on use of 10 micron (absolute) filters for low-flow dispenser pumps and 30 micron (or less) filters for high-flow dispenser pumps.

Center for Quality Assurance
Attn: TOP TIER Licensing Program | 4800 James Savage Road | Midland, MI 48642 USA