The direct shift gearbox is unlike conventional automatic transmissions as it contains two clutches which are computer-controlled to very precisely engineered tolerances. It is so refined that each change takes less than four-hundredths of a second. If the gearbox oil is dirty it will harm the other parts and affect the performance. This sophisticated piece of engineering needs regular oil changes to enable it to function to its optimum performance. Dirty oil can overheat the gearbox or cause the clutches to burn out. This will lead to poor gear selection, loss of power and transmission failure.
There are multiple types of Direct Shift gearbox; for example the 6 speed wet clutch DSG gearbox (which can be found in models across the VAG group range) requires an oil and filter change every 40,000 miles. However this can vary slightly from model and age or vehicle, so please call us for advice to confirm when yours is due.