Patent ID: 7195706

Claim:
A process for manufacturing a finished lubricant, comprising the steps of: a. performing a Fischer-Tropsch synthesis on syngas to provide a product stream; b. isolating from said product stream a substantially paraffinic wax feed having: i. less than about 30 ppm total combined nitrogen and sulfur; ii. less than about 1 weight percent oxygen; iii. a weight ratio of molecules having at least 60 or more carbon atoms and molecules having at least 30 carbon atoms less than 0.10; c. dewaxing said substantially paraffinic wax feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), whereby an isomerized oil is produced; d. hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having: i. a weight percent of all molecules with at least one aromatic function less than 0.30; ii. a weight percent of all molecules with at least one cycloparaffin function greater than 10; iii. a ratio of weight percent of molecules containing monocycloparaffins to weight percent of molecules containing multicycloparaffins greater than 20; iv. a viscosity index greater than an amount calculated by the equation: VI=28×Ln(Kinematic Viscosity at 100° C.) +95; and e. blending the lubricating base oil with at least one lubricant additive.