The invention relates to a dual clutch transmission, especially of a motor vehicle, comprising a hydraulic circuit (1) for cooling the dual clutch transmission, said hydraulic circuit (1) comprising at least one pump (7, 9) for delivering a hydraulic fluid flow, at least one cooler (183) for cooling the hydraulic fluid flow, and a volume control valve (185) for adjusting the hydraulic fluid flow for at least one cooling system (221, 229) which is associated with clutches (K1, K2) of the dual clutch transmission. Said volume control valve (185) is designed such that it supplies the hydraulic fluid flow to a first cooling system (221), which is associated with a first one of the clutches (K1), in a first switching state and to a second cooling system (229), which is associated with a second one of the clutches (K2), in at least one second switching state.