Or you could learn how to work on cars, starting with yours.
Do that oil change you're probably way over-do for. Rotate your wheels while you're at it. Just look for diagrams and guides from different websites/forums for your exact year/make/model.
Trust me, oil changes and tire rotations are easy. EASY. You might find you like workin on cars, too.
EDIT: Or if you have a 2nd car or can plan properly, pull that whole engine out, take it apart, and put it back together.

Best idea I've seen. My dad actually knows alot about cars. I'll ask him to show me those things.