Hi Everyone,

I would like to change the gearbox fluid in my 997.2 GT3 (with 13000 miles) and would like to know which is the fill plug the Mobil 1 should go in. There are shown in the attached photos a plug (9mm hex/Allen) next to the drive shaft and the one on top of the gear box (with an 8 mm allen bolt situated on the socket hole on the upper right side above the linkage). Which or both is the fill plug?

 

The fill hole is on the opposite side. Here's a nice DIY:

http://forums.rennlist.com/rennforum...ferential.html

 

Thanks a lot, that link is most helpful and appreciated. I've attached images of the correct fillplug with my own shortened allen wrench inserted in the tight space described in the DIY procedure.

 

Now all I need are the aluminum crush washers, gear lube , and other supplies.