The acronym RBOB stands for Reformulated Gasoline Blend stock for Oxygenate Blending. Because RBOB gasoline is refined from crude oil there is a high correlation between crude pricing and gasoline pricing, but there is also far more involved. Gasoline refineries are often located in coastal areas, which means weather can have a huge impact on gasoline prices at times. Also of consideration is the refinery mix, or how much gasoline is being refined compared with other products like heating oil. And the taxation of gasoline, which can vary widely from one jurisdiction to another, can also have a heavy impact on gasoline prices.