What is RBOB (Reformulated Blendstock for Oxygenate Blending)?

RBOB (Reformulated Blendstock for Oxygenate Blending) is a specially produced reformulated gasoline blendstock intended for blending with oxygenates downstream of the refinery where it was produced. Includes RBOB used to meet requirements of the Federal reformulated gasoline program and other blendstock intended for blending with oxygenates to produce finished gasoline that meets or exceeds emissions performance requirements of Federal reformulated gasoline (e.g. California RBOB and Arizona RBOB). Excludes conventional gasoline blendstocks for oxygenate blending (CBOB).

RBOB becomes reformulated gasoline (or RFG) after blending with ethanol.