Patent ID: 7018525

Claim:
A process of making a lubricant base oil comprising the steps of: a) hydroisomerization dewaxing a waxy feed using a shape selective intermediate pore size molecular sieve to produce an intermediate oil isomerate, wherein the intermediate oil isomerate comprises paraffinic hydrocarbon components in which the extent of branching is less than 7 alkyl branches per 100 carbons; b) analyzing the intermediate oil isomerate to determine that the intermediate oil isomerate comprises paraffinic hydrocarbon components in which the extent of branching is less than 7 alkyl branches per 100 carbons; and c) solvent dewaxing the intermediate oil isomerate to produce a lubricant base oil wherein the lubricant base oil comprises paraffinic hydrocarbon components in which the extent of branching is less than 8 alkyl branches per 100 carbons and less than 20 wt % of the alkyl branches are at the 2 position; the lubricant base oil having a pour point of less than −8° C.; a kinematic viscosity at 100° C. of about 3.2 cSt or greater; and a Viscosity Index greater than a Target Viscosity Index as calculated by the following equation: Target Viscosity Index=22×ln(Kinematic Viscosity at 100° C.)+132.