Hello everybody!
My family owns a 2006 Porsche Cayenne Turbo S (520 hp).
Its mileage is relatively modest - about 23000 kms.
But climate here in Russia is cold, roads are rough and dirty, so stress upon transmission of this car is relatively strong because of its heavy weight, owner's sporty driving style and powerful engine.
That's why I've got a desperate urge to change oils in both axles, transfer case and auto gearbox.
Local dealer said that it's ridiculous - according to the manual, that change is necessary only after 240000 (!) kms or after 16 years - which I myself think is ridiculous.
Can anyone tell me - does changing oils in the whole tranny after 4 years and 23000 kms of mileage make sense? Will there be any performance improvements, noise reduction, smoother shifts?
And I've had difficulties to determine which type of oils should be used in both axles. Will usual GL-5 75W-90 synthetic oil fit?
And is it reasonable to use Motul's ATF instead or Porsche's original fluid in the gearbox and transfer case - I've heard that auto tranny fluid cannot be drained fully and old fluid mixes with fresh fluid inevitably.
If any of you can provide useful quotes or DIY scenario - I will be most grateful.
My family owns a 2006 Porsche Cayenne Turbo S (520 hp).
Its mileage is relatively modest - about 23000 kms.
But climate here in Russia is cold, roads are rough and dirty, so stress upon transmission of this car is relatively strong because of its heavy weight, owner's sporty driving style and powerful engine.
That's why I've got a desperate urge to change oils in both axles, transfer case and auto gearbox.
Local dealer said that it's ridiculous - according to the manual, that change is necessary only after 240000 (!) kms or after 16 years - which I myself think is ridiculous.
Can anyone tell me - does changing oils in the whole tranny after 4 years and 23000 kms of mileage make sense? Will there be any performance improvements, noise reduction, smoother shifts?
And I've had difficulties to determine which type of oils should be used in both axles. Will usual GL-5 75W-90 synthetic oil fit?
And is it reasonable to use Motul's ATF instead or Porsche's original fluid in the gearbox and transfer case - I've heard that auto tranny fluid cannot be drained fully and old fluid mixes with fresh fluid inevitably.
If any of you can provide useful quotes or DIY scenario - I will be most grateful.