The 120 Kubota engine of Volvo Excavator adopts Kubota 70 HP turbocharged engine, which burns diesel fully and gets the maximum power with less oil, so the 120 Kubota engine of Volvo Excavator saves fuel.

The method of engine maintenance is to change the oil and oil filter regularly, keep the crankcase well ventilated, clean the fuel system regularly, clean the water tank regularly and clean the crankcase regularly.