Lubricating Composition and Method of Lubricating a Transmission

A lubricating composition comprising:

• (a) an oil of lubricating viscosity having a kinematic viscosity at 100° C. of 2.8 to 3.6 cSt (mm2/s) and a viscosity index of 104 to 130;
• (b) 1.2 to 5.0 wt % of at least one borated dispersant, wherein at least one borated dispersant is further functionalised with a sulphur or phosphorus moiety;
• (c) a calcium-containing detergent, wherein the detergent is present in an amount to deliver at least 110 ppm to 700 ppm of calcium;
• (d) a at least two phosphorus-containing compounds, wherein the phosphorus-containing compounds are present in an amount to deliver 360 to 950 ppm of phosphorus to the lubricating composition, wherein at least 150 ppm of the phosphorus is delivered by a C4-6 hydrocarbyl phosphite;
• and
• (e) 0.1 wt % to 5 wt % of a linear polymer viscosity modifier having dispersant functionality, wherein the linear polymer has a weight average molecular weight of 5,000 to 25,000.