2005 Engine Oil

I've been having my dealer change the oil at 5k. They alway use Citgo 5-30. I want to start doing my own changes but don't want to use Citgo. Can anyone recommend another brand? How about a heavier weight oil?
Has anyone found a replacement for the original Goodyear tires. At 16k miles they are showing considerable wear. I'd like to go to Michelins for the ride.

Tarheel73:)

You may want to try Nippon Oil's ENEOS fully synthetic engine oils?
They just launched the 0W-20 and CVT fluid as well.

Here are a couple of sites to check out:
www.eneos.us (http://www.eneos.us) or you can buy on-line at www.ChrysanStore.com (http://www.ChrysanStore.com)