Hi together, For a transmission oil flushing on the 722.9 transmission (the older 7G Tronic, not 7G Tonic Plus) with M273 motor, I would like to tap the return line of the transmission oil to flush in the closed oil circuit. Does anyone know which the lines are? I think they are at the bottom of the M273 somewhere? I would proceed like to: – drain oil from the oil tank – drain oil from the converter. – remove the tub, clean magnets and tubs – new filter on it – the yellow transmission plug grad exchange – oil tank with new seal and new nozzle on it. – Fill oil drained oil through the oil tank again. For this I create a filling adapter – release return line (even, where is it?) – Connect to the dishwasher – Rinse the engine and gear with oil. I expect to do everything with about 15 liters to rinse. – Use additives for the flushing or not? What does it mean, why not? The ghosts split. Thank you, Greetings Achill