Whatever you do, DO NOT go to Jiffy Lube. One of my old coworkers had a friend who worked at one in the area and he said that very often they "would NOT change the oil filter because they were in such a hurry".
I took that with a grain of salt until I saw this expose on Jiffy Lube scams:
"NBC4 in LA put hidden cameras under their car hoods and took them to nine different Jiffy Lubes, They found six out of the nine didn't do any of the promised work yet charged for services in full."
http://www.youtube.com/watch?v=wiCAJ8ULnaI
Confirms exactly what my coworkers friend said and shows that the ripoffs go well beyond just not changing the filters. If they're doing that crap in LA then they're probably doing it everywhere. Too bad they didn't get busted by a national media outlet.
I'd think twice before going to any of those "quick lube" oil change joints, especially Jiffy Lube.