Porsche

I know i should use a synthetic oil, but what brand is recommended and what does the porsche dealer use??? any ideas? thanks everyone!

Porsche dealers will most likely use mobil 1, and this is the brand that is recommended by porsche - though such recommendations have as much to do with commerical contracts and such as they do with it being the best product (mobil 1 has been the recommended brand going back to mobil 1 being a major sponsor for factory racing efforts). but commerical issues aside, mobil 1 is a quality oil and should meet the needs of the boxster without any problems. redline makes an excellent synthetic oil, though it can sometimes be hard to track down. royal purple is also a nice alternative.