Process to make finished base oils and white oils from dewaxed bulk base oils

A process for preparing base oil from a waxy hydrocarbon feedstock comprising:

• a) contacting the hydrocarbon feedstock in a hydroisomerization zone under hydroisomerization dewaxing conditions;
• b) collecting a dewaxed product stream from the hydroisomerization zone and passing the product streams to a distillation column;
• c) separating the dewaxed product stream into fuel and base oil products in the distillation column;
• d) testing the base oil products to determine if they meet minimum desired specifications;
• e) passing a base oil product which meets the minimum desired specifications for a base oil to a hydrofinishing reactor to meet more stringent specifications, or to a further use or direct sale;
• and
• f) collecting a base oil product stream from the hydrofinishing reactor and testing for readily carbonizable substances.