Mamut79

im planning to change oil in my 2006 Cayenne Manual Transmission. Does anybody have an access to specifications of oils? I need viscosity numbers for manual transmission , all transfer cases and rear differential. I want to upgrade the oils to red line or amsoil products. Thanks.

Slow Guy

I can't help you on gear oil specs but I can say there were no Amsoil or Redline oils on Porsche's approved oils list last one I saw.

Mamut79

isnt that a VW drivetrain that Cayenne is using ? Ofcourse Porsche will only specify their oil and not "approve" of any other company.

Slow Guy

No, there are many oils on Porsche's Approved Oil List, just not from A or R. Do a search on "Porsche approved oils" and you'll find several discussions on the reasons why.