Systems and methods for renewable fuels

A method of producing renewable fuels, comprising:

• hydrotreating a biofeedstock by contacting reactants comprising a combined feedstock and hydrogen with a hydrotreating catalyst to produce normal paraffins,
• wherein the combined feedstock comprises a first vegetable oil and a second vegetable oil;
• wherein the first vegetable oil is present in an amount of about 50% or less;
• wherein the second vegetable oil has about 10% or more of each of metals, phosphorous, and chlorophyll than the biofeedstock;
• wherein the second vegetable oil comprises the metals in an amount of about 200 ppm or less, the phosphorous in an amount of 200 ppm or less, and the chlorophyll in an amount of about 30 ppm or less;
• and
• wherein the first vegetable oil comprises the metals in an amount of about 10 ppm or less, the phosphorous in an amount of about 2 ppm or less, and the chlorophyll in an amount of about 1 ppm or less;
• isomerizing at least a portion of the normal paraffins to produce branched paraffins in an isomerization effluent;
• and
• separating at least a jet range fraction and a diesel range fraction from the isomerization effluent.