The invention concerns the field of turbomachines, and more particularly a turbomachine (5a) comprising at least a compressor (8), a combustion chamber (9), a first turbine (10) linked to the compressor (8) by a first rotating shaft (11), a device (13) for actuating said first rotating shaft (11) in order to keep the first turbine (10) and the compressor (8) rotating when the combustion chamber (9) is off, and a lubrication circuit (14) for lubricating the turbomachine (5a). This circuit (14) passes through at least one heat source (15, 15a-15c) capable of heating a lubricant in said lubrication circuit (14) when the first turbine (10) and the compressor (8) are rotating while the combustion chamber (9) is off.