I would not have the oil in my Lawn Mower changed at JL. I do have a local guy who does my oil changes for me AS I WATCH.
I buy the filter at my local dealer and the Mobil 1 at Wally World or Pep Boys.
Lately, I have been using Shell Fully Syn Rotella 5-40. At WW, it costs about $3.25 per qt.
Ditto on the plug info, 60 K for 01 and up.
Good luck.
QUOTE=Tool Pants]The maintenance check list is here.
http://www.renntech.org/forums/index.php?act=maint&code=maint_menu The Boxster is the same as a 996.
We filmed the 30k service on a Boxster and 996 for the DVD set if you are interested in doing it yourself.
On your year the plugs are good for 60k miles.[/QUOTE]