YOKOTA AIR BASE, Japan -- The Yokota Fussa Express changed the fuel grade from premium fuel to regular fuel, April 12, at Yokota Air Base, Japan. The change in fuel type is part of a continued effort to improve the quality of life across the Air Force and is meant to provide further support to Airmen and their families. Yokota only offered premium fuel for its drivers until now, however, premium fuel will still be offered at the East Express.