Auto transmission oil and rear diff oil

[rhys.williams007@yahoo.co.uk]

Hi,

Has anyone changed their oil on the transmission and diff recently? Which the best/correct oil for a 2003 996 C4S?

Thanks

 

[Pieman7]

I did mine this year can't remember which I used but will look up. I got mine from design911 I also changed the tiptronic filter in the gear box. I thing I would check when doing the tip oil change is check the rubber donut from the front of the gear box to the front transfer box they tend to split. They can be bought for about 80.00 takes about 15 mins to change.

 

[Richard_Hamilton]

The ATF on the C4S original fill was either Shell ATF 3403-M115 or Fuchs ATF 3353 or 3353 Plus. Capacity is 9.0 litres, but the change quantity is 4.5 litres, because you can't drain the torque converter. You need to monitor the ATF temperature when filling, and without the right equipment can be a difficult process.

Original fill for the front and rear final drive was either Mobilube PTX 75W-90 or Shell Transaxle 75W-90. Rear final drive capacity/change quantity is 1.2 litres. Front final drive capacity/fill quantity is 1.5 litres.