OEMs created the TOP TIER™ fuel program and continue to monitor its effectiveness. The program is a collaboration among vehicle and engine manufacturers (Sponsors) intended to create a winning situation for OEMs, fuel retailers, and vehicle owners.
Through the TOP TIER™ programs, sponsors are able to create and recommend a specification by which they can make fuel quality improvements to meet the ever-changing demands of engine technology. Fuel retailers voluntarily join the program to be recognized for supplying fuel which meets the TOP TIER™ requirements. The customer, driver, or equipment operator ultimately benefit when critical components of the engine stay cleaner and performance reducing deposits are kept at a minimum. Vehicle customer satisfaction is the ultimate goal of the program.