A lubricating composition, comprising a first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100°C of from 3.2 cSt to 3.8 cSt, a pour point of below -70°C and obtained by a process comprising: a. contacting a catalyst, an activator, and a monomer in a first reactor to obtain a first reactor effluent, the effluent comprising a dimer product, a trimer product, and optionally a higher oligomer product, b. feeding at least a portion of the dimer product to a second reactor, c. contacting said dimer product with a second catalyst, a second activator, and optionally a second monomer in the second reactor, d. obtaining a second reactor effluent, the effluent comprising at least a trimer product, and e. hydrogenating at least the trimer product of the second reactor effluent, wherein the dimer product of the first reactor effluent contains at least 25 wt% of tri-substituted vinylene represented by the following structure: and the dashed line represents the two possible locations where the unsaturated double bond may be located and Rx and Ry are independently selected from a C 3 to C 21 alkyl group, wherein the first base oil component is present in an amount of from 5 wt% to 60 wt%, based on the total weight of the composition; the compostion further comprises 20 wt% to 70 wt% of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group III base stock or any combination of Group III base stocks; and wherein the composition has a kinematic viscosity at 100°C of from 5.6 to 16.3 cSt, a Noack volatility of less than 15% as determined by ASTM D5800, a CCS viscosity of less than 6200 cP at -35°C as determined by ASTM D5293, and an HTHS viscosity of from 2.5 mPa-s to 4.0 mPa-s at 150°C as determined by ASTM D4683. a. contacting a catalyst, an activator, and a monomer in a first reactor to obtain a first reactor effluent, the effluent comprising a dimer product, a trimer product, and optionally a higher oligomer product, b. feeding at least a portion of the dimer product to a second reactor, c. contacting said dimer product with a second catalyst, a second activator, and optionally a second monomer in the second reactor, d. obtaining a second reactor effluent, the effluent comprising at least a trimer product, and e. hydrogenating at least the trimer product of the second reactor effluent, wherein the dimer product of the first reactor effluent contains at least 25 wt% of tri-substituted vinylene represented by the following structure: and the dashed line represents the two possible locations where the unsaturated double bond may be located and Rx and Ry are independently selected from a C 3 to C 21 alkyl group, wherein the first base oil component is present in an amount of from 5 wt% to 60 wt%, based on the total weight of the composition; the compostion further comprises 20 wt% to 70 wt% of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group III base stock or any combination of Group III base stocks; and wherein the composition has a kinematic viscosity at 100°C of from 5.6 to 16.3 cSt, a Noack volatility of less than 15% as determined by ASTM D5800, a CCS viscosity of less than 6200 cP at -35°C as determined by ASTM D5293, and an HTHS viscosity of from 2.5 mPa-s to 4.0 mPa-s at 150°C as determined by ASTM D4683.