특히 미국 서부텍사스산원유(WTI)나 셰일오일 등은 휘발유나 나프타 생산에 유리한 경질유가 대부분이라 최근 몇 달간 휘발유 가격하락이 두드러졌다.
In particular, US West Texas crude oil (WTI) and shale oil are mostly light oils that are advantageous for gasoline and naphtha production and the sharp drop in the oil price for the recent several months was observed.