TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The vegetable oil comprises one or more biologically-derived oils comprising canola, soy, rapeseed, palm, peanut, Jatropha, yellow grease and/or algae.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The isomerization catalyst is a noble metal on a silicoaluminophosphate molecular sieve (SAPO 11) support.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The system further comprises a hydrofinishing unit (204) for hydrofinishing the base oil to yield hydrofinished base oil. The processing subsystem includes a hydroprocessing means for hydroprocessing the triglyceride-containing vegetable oil or its derivatives.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The method further comprises hydrofinishing the base oil to yield a hydrofinished base oil. The processing step comprises a hydroprocessing substep, which utilizes an alumina-supported nickel-molybdenum catalyst. The oligomeric yield is enhanced by increasing concentration of unsaturated fatty acid components via fractional crystallization techniques. The step of isomerizing is carried out at 550-750 degrees F. The isomerized mixture comprises at least 20 wt.% of alkanes having a carbon number of greater than or equal to 30. Preferred Components: The oligomerized mixture comprises an oligomer component comprising at least 50 wt.% of dimer species. The diesel fuel comprises at least 70 wt.% of 12-18C alkanes, where the diesel fuel has a pour point of less than -10 degrees C. The base oil has a pour point of less than -10 degrees C, where the base oil has a viscosity index of greater than 120. The hydrofinished base oil has a pour point of less than -10 degrees C, where the hydrofinished base oil has a viscosity index of greater than 120. EXAMPLE - Canola oil was hydrotreated over a nickel-molybdenum/alumina hydrotreating catalyst under the conditions of 1000 psig, 5000 scf/bbl hydrogen, 1.66 LHSV (liquid hourly space velocity), and 610 degrees F. This reactor was followed by a second reactor containing a platinum on SM-3 sieve isomerization catalyst, also at 1.66 LHSV and a temperature of 700 degrees F. Processing conditions effected a conversion yield as 92 wt.% of the canola oil was converted from 650 degrees F+ to 650 degrees F-. Upon distillation, the fraction boiling below 650 degrees F (650 degrees F-) was predominately a paraffinic diesel, while the fraction boiling above 650 degrees F (650 degrees F+) was comprised primarily of oligomerized (primarily dimerized) species (gas chromatography/mass spectral analysis) yielding a mass distribution centered around a 36C paraffin (alkane). This oil was further isomerized over platinum on SM-3 at 600 degrees F to give a 3.3 cSt oil of -10 degrees C pour point, -4 degrees C cloud point, and 204 viscosity index.