I took my Boxster by dad's (very honest, but non-Porsche) mechanic and he said that the clutch felt fine and he didn't detect any slipping. I also tried the uphill test mentioned earlier three times. I was going about 30mph and shifted from 2nd to 5th and floored it, the RPM's dropped lower then stabilized and I was crawling up the hill. Which I think means it is not slipping.
This mechanic has reasonable prices but I am not too fond of being lied too. I am going to hold off until the clutch is noticeably failing, and from what I found out it only takes a day to get the clutch replaced.
Thanks again for the great advice! (You guys just saved me $1300, for now)
