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As a newbie to Porsche mechanicals, every project is an adventure.  This time hurry and a lack of information enabled a stupid error.  I filled the power steering reservoir (I think) with brake fluid.

 

While removing a front axle on my '04 S recently I disconnected the right brake line at the calliper.  The fluid ran into a pan.  All went well until I tried to bleed the brakes upon reassembly.

 

With my mind on the problem down below, I opened what looked like the brake fluid lid, checked to see that the power bleeder I found under the bench fitted, then dumped in almost a half-litre of brake fluid.  Understandably, the pump had no effect upon the bleeding action at the wheels.  It was pretty bewildering at the time, though.  I vacuumed out the DOT 4 and replaced it with hydraulic fluid from my Kubota, subject to finding a method to drain and purge the power steering system.

 

One can make all sorts of comments about senility or dumb geezers at this point, but a more profitable approach would be to produce a photo of a Cayenne engine bay, beauty panels removed, and clearly labelled in the manner the best and most helpful of the DIY Tutorials are done on this site.  It wouldn't be hard to label the file so that newbies looking  for basic anatomy information on their Cayennes would learn that the brake reservoir is under a panel below the windshield wiper.

Edited by Rod Croskery
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UPDATE on the wrong-reservoir gaffe:

 

After a bit of reading on RennList I found a description of a power steering bleeding procedure on an early Porsche.  It looked pretty simple, so I backed out a low-lying fitting on the steering rack, drained all I could get of the contaminated fluid out of the system with the help of a brake bleeding pump, rinsed it with ATF, drained that as well as I could, and then added 1.25 litres of VW/Audi power steering fluid.  It's significantly thinner than ATF. 

 

While I had the covers off I changed the oil, filter, and the front diff oil.

 

The fresh fluids and soft winter tires seem to have reduced rolling noise in the cabin, and the steering is considerably lighter.  Before my dumb error, sharp low speed turns took quite a bit of arm strength.  They seem easier now.  Maybe I was due for a PS flush anyway.

 

No fluids have appeared so far on the garage floor.

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