NOVELTY - Producing a renewable fuel, comprises (a) providing a bio-oil having an oxygen content of less than 15 wt.%, (b) separating the bio-oil into at least a light fraction and a heavy fraction, where the mid-boiling point of the heavy fraction is at least 100 degrees C, greater than the mid-boiling point of the light fraction, (c) hydrotreating at least a portion of the heavy fraction to provide a hydrotreated product, and (d) combining at least a portion of the light fraction and at least a portion of the hydrotreated product with a petroleum-derived gasoline to produce a renewable gasoline.    USE - The process is useful for producing renewable fuels.    ADVANTAGE - The process is capable of producing renewable fuels in an environmental friendly and cost effective manner.    DETAILED DESCRIPTION - Producing a renewable fuel, comprises: either (a) providing a bio-oil having an oxygen content of less than 15 wt.%, (b) separating the bio-oil into at least a light fraction and a heavy fraction, where the mid-boiling point of the heavy fraction is at least 100 degrees C, greater than the mid-boiling point of the light fraction, (c) hydrotreating at least a portion of the heavy fraction to provide a hydrotreated product, and (d) combining at least a portion of the light fraction and at least a portion of the hydrotreated product with a petroleum-derived gasoline to produce a renewable gasoline, where the renewable gasoline comprises the petroleum-derived gasoline of at least 60 wt.%, the light fraction of at least 0.1 wt.%, and the hydrotreated product of at least 0.1 wt.%; or (a1) thermochemically converting biomass in the presence of a catalyst to produce bio-oil, (b1) separating the bio-oil into a bio-gasoline fraction and a bio-distillate fraction by heated distillation, where at least 75 wt.% of the bio-gasoline fraction has a boiling point below 205 degrees C, at least 75 wt.% of the bio-distillate fraction has a boiling point above 205 degrees C, and the mid-boiling point of the bio-distillate fraction is at least 100 degrees C, greater than the mid-boiling point of the bio-gasoline fraction, (c1) hydrotreating and fractionating at least a portion of the bio-distillate fraction to provide separate streams of a hydrotreated bio-gasoline, a hydrotreated bio-diesel, and a hydrotreated bio-fuel oil, where at least 75 wt.% of the hydrotreated bio-gasoline has a boiling point less than 205 degrees C, where at least 75 wt.% of the hydrotreated bio-diesel has a boiling point of 205-325 degrees C, where at least 75 wt.% of the hydrotreated bio-fuel oil has a boiling point above 325 degrees C; and (e1) combining at least a portion of the bio-gasoline fraction and at least a portion of the hydrotreated biogasoline with a petroleum-derived gasoline to produce a renewable gasoline. An INDEPENDENT CLAIM is included for a system for producing a bio-oil, comprising a biomass feedstock source for providing solid particulate biomass, a conversion reactor for thermally converting the solid particulate biomass into a bio-oil, a separator for separating the bio-oil into at least a biogasoline fraction and a bio-distillate fraction, a hydrotreater for hydrotreating the bio-distillate fraction to produce a hydrotreated product, a fractionator for fractionating the hydrotreated product into at least a hydrotreated bio-gasoline and a hydrotreated bio-diesel, a petroleum-derived gasoline source for providing a petroleum-derived gasoline, a gasoline blending system for combining at least a portion of the bio-gasoline fraction and at least a portion of the hydrotreated bio-gasoline with the petroleum-derived gasoline, a petroleum-derived diesel source for providing a petroleum-derived diesel, and a diesel blending system for combining at least a portion of the hydrotreated bio-diesel with the petroleum-derived diesel.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a system for producing a bio-oil.    Biomass source (12)    Feed system (14)    Biomass conversion reactor (16)    Conversion effluent (18)    Solids separator. (20)