휘발유는 함산소 첨가제인 MTBE가 첨가되지는 않은 국내 정유사의 서브 옥탄 가솔린(Sub-octane gasoline)을 사용하였다.
For gasoline, sub-octane gasoline from a domestic refinery to which MTBE, an oxygen-containing additive, was not added was used.