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Does any one have the procedures on how to change gear oil (75w90) on the 991.1 GT3? Couldn’t find anything on the workshop manual. Help would be much appreciated thank you
I just did mine 991.1 GT3. I don't think mine has that banjo fitting for the fill plug. Location is the same though.
Also, the procedure for filling as from WM 399035.
Unscrew filler screw -1- using socket-wrench insert (a/f 8 mm) from socket wrench set, 39-piece WE 1640 .
1. 1.1. Add transmission oil using special tool manual metering pump, Porsche set WE 1372 until oil emerges at the filler opening.
Screw in filler screw by hand.
Information
Basic requirements for filling the transmission correctly:
1. Vehicle is horizontal on the lifting platform
2. Transmission oil temperature is approx. 20 °C
3. Engine off, transmission is not turning.
Get the vehicle ready:
1. Raise the vehicle until the wheels can turn freely.
2. Start engine
3. Engage 1st gear using the manual shift gate
4. Allow the transmission to turn at idle speed for two minutes .
5. Move selector lever to "N"
6. Switch off engine
7. Wait for ten minutes!
WARNING: Hot fluid Danger of scalding
Information
The transmission temperature must not be higher than 40 °C when filling the transmission.
4. Unscrew filler screw -1- .
4.1. Transmission oil runs out: Oil level in transmission is OK (for GT3 vehicles, see Step 4.3).
4.2. Transmission oil does not run out: Add oil using manual metering pump, Porsche set WE 1372 until oil emerges at the filler opening.
4.3. 150 ml of transmission oil must be extracted if the oil level is at the lower edge of the filler opening on GT3 vehicles!
5. Screw in and tighten new oil filler screw -1- .
08-06-2023, 03:00 AM
991.1 GT3 changing diff/gear oil
