Porsche 911 GT3 R 2012 Technical Manual page 61

5.8.2. Oil filling
 Open the overflow pipe on the lower side of the gearbox (M6
socket cap screw)
Add Mobilube SHC through the oil fill opening till the oil overflows

from the above mentioned tube (approx. 3 litres for a newly build
gearbox)
 Close the oil overflow pipe and add 1.0 litre of oil
Oil drain plug
Porsche Motorsport recommends the use of Mobil Mobilube SHC.
Filler plug
Overflow
pipe
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