A vehicle drive line (1), comprising an engine (2) provided with an outgoing crank shaft (3), a main transmission unit (4), an intermediate drive shaft (8) that connects the main transmission unit (4) with the crank shaft (3), the intermediate drive shaft (8) being connected to the crank shaft (3) through a second transmission unit (7), and being offset in relation to the crank shaft (3). The drive line (1) comprises a circuit through which a liquid used for lubricating the main transmission unit (4) is conducted to the second transmission unit (7) and used for cooling and lubrication purposes in the latter, and then conducted back to the main transmission unit (4).