Over time, the oil loses its critical properties that prevent metal on metal contact It is possible that after a pdk clutch oil change there will be a difference in shift patterns. Changing your rear differential oil is important to keep your drivetrain smooth
Why You Need the Right Car Differential Fluid Pump for Your Vehicle
One of the easiest tasks to perform on your 996/997 is to change the transmission or differential oil, but just in case you need a bit of guidance, be sure.
Buy a 2003 porsche 911 differential oil at discount prices
Choose top quality brands febi, fuchs, genuine, idemitsu, liqui moly, motul. Begin by safely raising and supporting the vehicle so it is level Do not just jack up the rear It is best to drain the fluid while it is warm but use care not to burn yourself.
Noted that several diy'ers' have been performing the pdk clutch fluid change and the differential (final drive) gear oil change. Check prices & reviews on aftermarket & stock parts for your 2003 911 differential oil