An engine oil composition, comprising in admixture: 60 wt% to 90 wt% of a first base oil component, based on the total weight of the composition, the 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 and a Noack volatility of the C28 to C32 portion of the PAO is less than 12% as determined by ASTM D5800; and 0.1 wt% to 20 wt% of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt% to less than 0.25 wt% viscosity index improver, on a solid polymer basis; wherein the composition has a kinematic viscosity at 100°C of from 4 to 6 cSt, a Noack volatility of less than 15% as determined by ASTM D5800, a CCS viscosity of less than 3500 cP at -35°C as determined by ASTM D5293, and an HTHS viscosity of less than 2.6 mPa-s at 150°C as determined by ASTM D4683; wherein the first base oil component consists of a polyalphaolefin base stock obtained by a process for producing low viscosity polyalphaolefins having a carbon count of C28 to C32, said process comprising a first step that provides a tri-substituted vinylene intermediate polyalphaolefin dimer with metallocene catalysis, and a second step that provides a C28 to C32 polyalphaolefin trimer through addition of a monomer to the tri-substituted vinylene dimer; and wherein the viscosity index improvers are polymers and copolymers of methacrylate, butadiene, olefins, or alkylated styrenes. 60 wt% to 90 wt% of a first base oil component, based on the total weight of the composition, the 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 and a Noack volatility of the C28 to C32 portion of the PAO is less than 12% as determined by ASTM D5800; and 0.1 wt% to 20 wt% of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt% to less than 0.25 wt% viscosity index improver, on a solid polymer basis; wherein the composition has a kinematic viscosity at 100°C of from 4 to 6 cSt, a Noack volatility of less than 15% as determined by ASTM D5800, a CCS viscosity of less than 3500 cP at -35°C as determined by ASTM D5293, and an HTHS viscosity of less than 2.6 mPa-s at 150°C as determined by ASTM D4683; wherein the first base oil component consists of a polyalphaolefin base stock obtained by a process for producing low viscosity polyalphaolefins having a carbon count of C28 to C32, said process comprising a first step that provides a tri-substituted vinylene intermediate polyalphaolefin dimer with metallocene catalysis, and a second step that provides a C28 to C32 polyalphaolefin trimer through addition of a monomer to the tri-substituted vinylene dimer; and wherein the viscosity index improvers are polymers and copolymers of methacrylate, butadiene, olefins, or alkylated styrenes.