MTA is a gearbox used by many models of GM's Opel brand cars. Direct rotation is a single clutch manual gearbox. On the basis of manual gearbox, it is a manual-automatic gearbox with electromagnetic clutch. This kind of gearbox, you can choose automatic mode, and the electronic system will help you shift gears completely, but in this case, the connection is not necessarily comfortable, and it is more radical. You can also choose manual mode, manual addition and subtraction, electromagnetic clutch, clutch-free pedal and electromagnetic brush to help you clutch. So please be clear about two things. First of all, this gearbox is still a manual gearbox from a mechanical point of view, but you can choose electronic logic to help you shift gears. Second, since it is a manual gearbox in essence, remember to change the gearbox oil manually when changing the gearbox oil, and don't make a mistake. Meanwhile, you need to remember to change the clutch oil. The clutch oil pots of most Opel cars are near the battery, which can be found without disassembling the battery, and the exhaust hole is opposite to the oil drain hole.