A lubricating oil composition comprising: a) a base oil mixture comprising - at least 13 wt% of a renewable base oil; - the remainder selected from one or more base oils in the same or different API (American Petroleum Institute) category; - wherein the amounts of base oils given in wt% are based on the total base oil mixture; b) one or more performance additives; wherein the renewable base oil comprises: - more than 60 wt% C 31 alkanes, preferably more than 80 wt% C 31 alkanes; - less than 20 wt% C 32 or higher alkanes, preferably less than 10 wt% C 32 or higher alkanes; - preferably wherein the alkanes comprises 70 wt% or more iso -alkanes; and - preferably less than 1 wt% of oxygen-containing compounds; and wherein the at least one or more performance additives are selected from the list consisting of: antioxidants, metal deactivators, corrosion inhibitors, detergents, dispersants, antiwear additives, friction modifiers, pour point depressants, viscosity improvers, foam inhibitors, thickeners, demulsifiers, emulsifiers, bactericides, fungicides and tackiness additives; the weight percentages of the hydrocarbon composition of the renewable base oil is measured using field ionisation mass spectrometry (FI-MS). a) a base oil mixture comprising - at least 13 wt% of a renewable base oil; - the remainder selected from one or more base oils in the same or different API (American Petroleum Institute) category; - wherein the amounts of base oils given in wt% are based on the total base oil mixture; - at least 13 wt% of a renewable base oil; - the remainder selected from one or more base oils in the same or different API (American Petroleum Institute) category; - wherein the amounts of base oils given in wt% are based on the total base oil mixture; b) one or more performance additives; wherein the renewable base oil comprises: - more than 60 wt% C 31 alkanes, preferably more than 80 wt% C 31 alkanes; - less than 20 wt% C 32 or higher alkanes, preferably less than 10 wt% C 32 or higher alkanes; - preferably wherein the alkanes comprises 70 wt% or more iso -alkanes; and - preferably less than 1 wt% of oxygen-containing compounds; and wherein the at least one or more performance additives are selected from the list consisting of: antioxidants, metal deactivators, corrosion inhibitors, detergents, dispersants, antiwear additives, friction modifiers, pour point depressants, viscosity improvers, foam inhibitors, thickeners, demulsifiers, emulsifiers, bactericides, fungicides and tackiness additives; the weight percentages of the hydrocarbon composition of the renewable base oil is measured using field ionisation mass spectrometry (FI-MS). wherein the renewable base oil comprises: - more than 60 wt% C 31 alkanes, preferably more than 80 wt% C 31 alkanes; - less than 20 wt% C 32 or higher alkanes, preferably less than 10 wt% C 32 or higher alkanes; - preferably wherein the alkanes comprises 70 wt% or more iso -alkanes; and - preferably less than 1 wt% of oxygen-containing compounds; and - more than 60 wt% C 31 alkanes, preferably more than 80 wt% C 31 alkanes; - less than 20 wt% C 32 or higher alkanes, preferably less than 10 wt% C 32 or higher alkanes; - preferably wherein the alkanes comprises 70 wt% or more iso -alkanes; and - preferably less than 1 wt% of oxygen-containing compounds; and wherein the at least one or more performance additives are selected from the list consisting of: antioxidants, metal deactivators, corrosion inhibitors, detergents, dispersants, antiwear additives, friction modifiers, pour point depressants, viscosity improvers, foam inhibitors, thickeners, demulsifiers, emulsifiers, bactericides, fungicides and tackiness additives; the weight percentages of the hydrocarbon composition of the renewable base oil is measured using field ionisation mass spectrometry (FI-MS).