Oh please, let's not go THERE again. Synthetics are fantastic and WILL NOT hurt your engine. The ~98 up models actually REQUIRE use of synthetic or your warranty wil be void. I use Mobil full synthetics in all my engines with fantastic results, meaning measurable improvement on every vehicle with no problems whatsoever.
For more entertaining reading on this same subject, check this out:
http://www.peachparts.com/shopforum/showthread.php?threadid=59285
Regards,