Patent ID: 8658018

Claim:
A process for making a lubricant base oil blend, comprising: hydroisomerization dewaxing a waxy feed in a series of hydroisomerization reactors to make a light base oil fraction having: i. a kinematic viscosity at 100° C. between 1.5 and 3.6 cSt; ii. a pour point of −40° C. or less; and iii. a wt % Noack volatility between 0 and 100 and additionally less than a Noack Volatility Factor, wherein the Noack Volatility Factor is defined by the equation: 900×(Kinematic Viscosity at 100° C., in cSt) 2.8 −15; and blending together said light base oil fraction with a heavier base oil fraction comprising a petroleum-derived base oil; wherein the lubricant base oil blend has a wt % Noack volatility less than or equal to 29 and a VI less than 120.