This sure is well overdue for an answer, but will be answered nonetheless. The tC has a very ineffective power steering fluid cooler. It is just a hardline that dips down along the frame rail in the engine bay. With the steering pump cranking out over 1250 PSI, the hydraulic fluid overheats and burns. I would say that in warmer climates the fluid burns before 5K.
Quote:
Fluid:
ATF "DEXRON" II or III
HINT:
When hot, check that the fluid level is within the
HOT range on the oil reservoir. If the fluid is cold,
check that it is within the COLD range.
Standard fluid temperature:
75 to 80°C (167 to 176°F)
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There is no drain port or detailed draining procedure in the manual. Suggest draining at the pump by disconnecting the suction hose. This will drain the reservoir. To drain the rack and pinion you will need to turn the steering wheel slowly from lock to lock several times.
Do NOT do this with the motor running. To so would damage the pump.
There is a kit coming out soon that will alleviate this issue.