Porsche 2012 911 GT3 CUP Technical Manual page 14

3.3.5. Digital oil level display
An optional oil level display is available (997.641.139.9A):
The car wiring loom is already prepared for use of this display. The
connector for the display is located in the area of the rear side-window on
right-hand side of the car.
In addition, the oil level sensor 996.606.140.00 is necessary for
displaying the oil level. The sensor is plugged in the oil tank.
Attention: Do not fill above 90 %
11