Patent ID: 8143200

Claim:
A method for producing lubricating oil formulations having a pour point of about −45° C. or lower and a Brookfield viscosity at −40° C. of about 60,000 cP or lower using a base (a) stock selected from the group consisting of Group III hydroprocessed base stock, GTL base stock or mixture thereof, by adding to the base stock (a) at least about 10 wt % HVI-PAO based on the total lubricating oil formulation wherein the ratio of the HVI-PAO to base stock (a) is at least 1:2 and adding about 10 to 25 wt % of an ester to the lubricating oil formulation with the proviso that the lubricating oil formulation does not include a light PAO (4 cSt) or an API Group I base stock.