mas maganda jan ang fuel pero hindi environmental friendly. Maraming ka eklatan dito sa California. They used to have 93octane pero dahil sa mga environmentalist, pinalitan yung additives na MTBE. Wala nang MTBE kaya lower ang octane rating. We could have maintained the 93 octane in lieu of another additives but we have to pay more on the pump.
Bawas polusyon daw sa dagat ang MTBE pero yung alternative additive naman, delikado sa Land.
yung 91 octane hindi yata pwedeng compare sa 95RON or 91octane does not equal to 95RON.