When is this done (20K, 40, 60) and do I use the same Porsche coolant/antifreeze on my CTT as I use on my GT2?

Thanks

 

The minor and major services both state:
Coolant hoses: Check condition; radiators and air inlets at front: visual inspection for external contamination and blockage; Coolant: check the level and antifreeze protection
It doesn't really say when to change it. A few anti-freeze companies have lifetime guarantees with no changes, but the industry standard is generally 2 years. The 'new' extended life stuff is supposed to go 5 years.
Part #: P000004330105 is for both all year model cayennes and 99+ 911/996/997, so it's the same.

 

Any idea who makes it for Porsche?

As an example, Zerex G-05 is exactly the same as Mercedes-Benz branded antifreeze; and it's one heckuva lot cheaper.

 

Porsche says lifetime but Iam scepticle tha even the new, high tech stuff lasts more than 6-7 year. Ialso hear that the water pumps on CTT's go and then you haveto replace.

Porshe makes its own (pink) coolant ad it is $100 a gallon.

 

Very doubtful. Porsche is not a chemical manufacturer or formulator. They obviously contract it to a company like Zerex, Fuchs or other formulator.

 

agreed.