Patent ID: 7282137

Claim:
A process for preparing a lubricating oil basestock having a VI of at least about 135 which comprises: (1) hydrotreating a lubricating oil feedstock having a wax content of at least about 60 wt. %, based on feedstock, with a hydrotreating catalyst under effective hydrotreating conditions such that less than 5 wt. % of the feedstock is converted to 650° F. (343° C.) minus products to produce a hydrotreated feedstock whose VI increase is less than 3 greater than the VI of the feedstock; (2) stripping the hydrotreated feedstock to separate gaseous from liquid product; and (3) hydrodewaxing the liquid product with a dewaxing catalyst which is ZSM-48 under catalytically effective hydrodewaxing conditions wherein the dewaxing catalyst contains at least one of Pt or Pd and hydrodewaxing produces a dewaxed product having a pour point of −17° C. or less.