Hi guys,

Trying to search the interwebz on the intervals for oil change on the following:

• Transmission
• Differentials
• Transfer case

but can't seem to find an 'agreed' value on either this forum or Rennlist. Car is a 2004 Cayenne Turbo.

Any ideas?

 

Factory schedule is 160,000 miles. I changed them on my CTT at this mileage and the front/rear diff fluid came out like water it was so worn. The t-case fluid looked fine, a little dark. The transmission fluid was in surprisingly decent shape. The filter and the magnets do their job well.

From my Audi experience, I do diff fluids every 90k and the trans every 50-60k.

 

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I have been doing the whole drivetrain since 100,000 kms every two years. I do it myself.

Transmission Filter w/ gasket, 12 litres Toyota Type iv, 4 litres high quality 75w/90 costs under $200. The only thing that comes out dirty everytime is the transfer case. Have 260,000 kms on it now. Runs, drives, shifts perfect.

It's most likely excessive, but in reality super cheap maintenance and peace of mind. Interval for me is every 40,000 kms. Costs me less than $200 and an afternoon.