Transmission Fluid: Mobil Delvac or Porsche factory?

[Shred]

Hi,
I know how we all hate oil debates but I just want to ask for some opinions.
I will be changing my transmission oil next month, after some long research I have a problem deciding if I should use:

Mobil Delvac 75W-90
Gear oil - Mobil Delvac 75W-90 (1 gallon) – Lufteknic

or the factory:
ORMD-TRANS OIL 1LTR - Porsche (999-917-546-00)

It is for a 2003 Boxster S.
Anyone using Delvac on the their Boxster S?

Thanks

[thstone]

I always use the factory gear oil.

[rick3000]

Stick with the Porsche transmission fluid. I know it's expensive, but it's only every 90k miles. People tend to poor shifting with non-OEM fluid.

More info here:
http://986forum.com/forums/general-discussions/30441-manual-transmission-fluid-best-brands.html