A lubricating composition comprising: (a) 0.001 wt % to 15 wt % of a polymer with radial or star architecture, wherein the polymer has polymeric arms which are chemically bonded to a core portion, wherein the polymer is a polymethacrylate derived from a monomer composition comprising: (i) 50 wt % to 100 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 10 to 20, or 12 to 15 carbon atoms; (ii) 0 wt % to 40 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 1 to 9 carbon atoms; and (iii) 0 wt % to 10 wt % of a nitrogen containing monomer; wherein the core portion is a polyvalent (meth)acrylic monomer, oligomer, polymer or copolymer thereof; and wherein the polymer is obtained from RAFT or ATRP polymerisation processes; (b) 0.1 wt % to 15 wt % of an overbased detergent, wherein the overbased detergent comprises phenates, sulphonates, salixarates, carboxylates, overbased phosphorus acids, alkyl phenols, overbased sulphur coupled alkyl phenol compounds or saligenin detergents; (c) 0.1 wt % to 25 wt % of a dispersant, wherein the dispersant comprises a succinimide dispersant, a Mannich dispersant, an ester-containing dispersant, a condensation product of a fatty hydrocarbyl or polyisobutylene monocarboxylic acylating agent with an amine or ammonia, an alkyl amino phenol dispersant, a hydrocarbyl-amine dispersant, a polyether dispersant, or a polyetheramine dispersant; and (d) 45 wt % to 99.7 wt % of an oil of lubricating viscosity. (a) 0.001 wt % to 15 wt % of a polymer with radial or star architecture, wherein the polymer has polymeric arms which are chemically bonded to a core portion, wherein the polymer is a polymethacrylate derived from a monomer composition comprising: (i) 50 wt % to 100 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 10 to 20, or 12 to 15 carbon atoms; (ii) 0 wt % to 40 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 1 to 9 carbon atoms; and (iii) 0 wt % to 10 wt % of a nitrogen containing monomer; wherein the core portion is a polyvalent (meth)acrylic monomer, oligomer, polymer or copolymer thereof; and wherein the polymer is obtained from RAFT or ATRP polymerisation processes; (i) 50 wt % to 100 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 10 to 20, or 12 to 15 carbon atoms; (ii) 0 wt % to 40 wt % of an alkyl methacrylate, wherein the alkyl group of the methacrylate has 1 to 9 carbon atoms; and (iii) 0 wt % to 10 wt % of a nitrogen containing monomer; (b) 0.1 wt % to 15 wt % of an overbased detergent, wherein the overbased detergent comprises phenates, sulphonates, salixarates, carboxylates, overbased phosphorus acids, alkyl phenols, overbased sulphur coupled alkyl phenol compounds or saligenin detergents; (c) 0.1 wt % to 25 wt % of a dispersant, wherein the dispersant comprises a succinimide dispersant, a Mannich dispersant, an ester-containing dispersant, a condensation product of a fatty hydrocarbyl or polyisobutylene monocarboxylic acylating agent with an amine or ammonia, an alkyl amino phenol dispersant, a hydrocarbyl-amine dispersant, a polyether dispersant, or a polyetheramine dispersant; and (d) 45 wt % to 99.7 wt % of an oil of lubricating viscosity.