An oil temperature management assembly fluidly connects to an oil circulation system of a vehicle operating unit having an auxiliary heat exchanger. The management assembly includes a primary heat exchanger and a fluid support and connection module. The module has a module body connected to the primary heat exchanger, and a thermostatic valve. The module body exclusively includes: assembly inlet and outlets mouths fluidly connectable to and second oil ducts from and to the operating unit, a primary exchanger inlet and outlet mouths connecting the primary heat exchanger and the module, the primary exchanger outlet mouth fluidly communicates with the assembly outlet mouth; an auxiliary mouth for oil to the auxiliary heat exchanger. The thermostatic valve fluidly connects to the assembly inlet mouth, primary exchanger inlet mouth, and auxiliary mouth, and detects oil temperature entering the module and directs oil towards the primary exchanger inlet mouth and/or auxiliary mouth.

A traction drive for propelling a vehicle includes first and second drive components (1, 1*) that generate heat during operation. A cooling system for tempering the drive components (1, 1*, 2, 2*) has a first cooling circuit (3), a second cooling circuit (4), and a heat exchanger (5). The heat exchanger (5) is designed to transfer heat between the first and second cooling circuits (3, 4). The first cooling circuit (3) passes through the first drive component (1, 1*) in order to temper the first drive component (1, 1*) and the second cooling circuit (4) passes through the second drive component (2, 2*) in order to temper the second drive component (2, 2*). A valve (36) is arranged in the first cooling circuit (3) for adjusting the flow of coolant from the first cooling circuit (3) through the heat exchanger (5).