http://www.familycar.com/carcare.htm
It has several sections depending on what you want to do with your car...
- I want to keep my car for as long as possible and I want it to look and run great.
- I want to keep my car for as long as possible with minimum cost.
- I keep my cars for 3 to 5 years, then trade them in.
- I have a leased car -- I want to keep my costs to a minimum when turning it back in.