Originally Posted by jbaker136

I can see why you would want a shop to do the clutch side because of the PIWIS fill procedure, and no harm with that if the shop you use knows what they are doing and has a PIWIS that they will actually bother with using. IMHO, the PDK clutch side fluid is easy to change and can be done without a PIWIS. Drain, fill till it comes out, put in fill plug. Start the car and let the engine idle, hold the clutch fluid cooler pipe until it gets warm (About 3 to 5 min), remove fill plug and top off till fluid runs out again. It is about as simple as the gear oil. You can refer to the planet 9 link previously in this thread and or watch the youtube video on the process if you decide to DIY the clutch fluid as well. Good luck.

Jeff

Originally Posted by scott40

Do the oil drain plugs need to be replaced each time the differential fluid is changed? Also appears there’s a sealing ring for the filler screw that gets replaced each time. Is this correct?