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itoy · 05-03-2010, 06:35 AM

Finally, I replaced the transmission fluid & filter on my 2002 Boxster (Base) Tiptronic. The drain plug anf filler plug are located under the tansmission fluid pan. To access this place, I followed what LilBastard's instruction said. I removed the diagonals and the stress plate. Then found the small drain bolt and big filler bolt. When I drain the fluid, I collected almost 5.5 quarts of dark brown fluid. My car has a 69k miles on it. When I bought this car, maintenance records is unknown. The fluid pan itself has so many bolts (#27 Torx). Contrary to LilB's description, all of small bolts of the pan are the same in lenght.

After removing the pan, I replaced the filter and cleaned the pan and the 6 magnets. Then, I placed the new gasket and bolted back the fluid pan. I pre-heated all 8 quarts to about 38 deg. C per LilB's instructions. I used my old vegetation killer container that I bought from Home Depot and converted it to pump transmission fluid. Everythings went smoothly. I manage to fill in almost 5 quarts of fluids. Start the engine, step on the brake and shift the stick from P to R, wait 10 seconds then N to D, wait 10 seconds, then back to P and shut off the engine. I did go back under the car, open the filler bolt and top in more fluid. I did this 3 times before the filler hole started to over flow.

The hardest part that I encountered is the stress plate is so hard to put back. The holes are not aligned! I have to curse so many times before I manage to force it back to the bolts. Wheww! I almost give up on this one. But anyway, my only concern right now is why I got 6 quarts out but manage to put back 5 quarts only? I waited for 6 hours for the transmission to cool down but when I open the filler bolt, the fluid came out. I closed the filler bolt immediately and thinking maybe I need to warm it up again so I can add more fluid. So I start the engine for 5 minutes then open the filler bolt, the fluid came out again so I closed the hole immediately. I meassured the temperature of the fluid ans it is around 37 deg C. I am wondering why it is always like that. I drove the car for 10 miles in the highway so the gears can go up to the 5th. then went back home and wait till the fluid cools down. Then I open the filler hole again and the fluid came out.

I really dont know now how can I add more fluid to equal the amout of fluid that I taken out. Maybe the original owner overfilled the transmission before? I dont know, the car is running great now and that is the most important. Thank you to everybody and to LilBastard for the great instructions.

05-03-2010, 06:35 AM	#17
itoy Registered User Join Date: Oct 2009 Location: baltimore Posts: 35	Finally, I replaced the transmission fluid & filter on my 2002 Boxster (Base) Tiptronic. The drain plug anf filler plug are located under the tansmission fluid pan. To access this place, I followed what LilBastard's instruction said. I removed the diagonals and the stress plate. Then found the small drain bolt and big filler bolt. When I drain the fluid, I collected almost 5.5 quarts of dark brown fluid. My car has a 69k miles on it. When I bought this car, maintenance records is unknown. The fluid pan itself has so many bolts (#27 Torx). Contrary to LilB's description, all of small bolts of the pan are the same in lenght. After removing the pan, I replaced the filter and cleaned the pan and the 6 magnets. Then, I placed the new gasket and bolted back the fluid pan. I pre-heated all 8 quarts to about 38 deg. C per LilB's instructions. I used my old vegetation killer container that I bought from Home Depot and converted it to pump transmission fluid. Everythings went smoothly. I manage to fill in almost 5 quarts of fluids. Start the engine, step on the brake and shift the stick from P to R, wait 10 seconds then N to D, wait 10 seconds, then back to P and shut off the engine. I did go back under the car, open the filler bolt and top in more fluid. I did this 3 times before the filler hole started to over flow. The hardest part that I encountered is the stress plate is so hard to put back. The holes are not aligned! I have to curse so many times before I manage to force it back to the bolts. Wheww! I almost give up on this one. But anyway, my only concern right now is why I got 6 quarts out but manage to put back 5 quarts only? I waited for 6 hours for the transmission to cool down but when I open the filler bolt, the fluid came out. I closed the filler bolt immediately and thinking maybe I need to warm it up again so I can add more fluid. So I start the engine for 5 minutes then open the filler bolt, the fluid came out again so I closed the hole immediately. I meassured the temperature of the fluid ans it is around 37 deg C. I am wondering why it is always like that. I drove the car for 10 miles in the highway so the gears can go up to the 5th. then went back home and wait till the fluid cools down. Then I open the filler hole again and the fluid came out. I really dont know now how can I add more fluid to equal the amout of fluid that I taken out. Maybe the original owner overfilled the transmission before? I dont know, the car is running great now and that is the most important. Thank you to everybody and to LilBastard for the great instructions.