I have a 2003 Civic LX. I took it to the dealer the other day and they wanted to sell me a 15,000 mile maintenance for 9. The main part of this maintenance was the replacement of the air cleaner element. The service writer tried to convince me that I could not do it myself, because it is "inside the engine". I haven't looked at it yet, they still have the car waiting for parts on a service bulletin repair. How hard is the air filter element replacement? I am no mechanic, but for 9 it better be really complicated. What is the cost of the replacement filter and is it available at auto part stores vs the dealer? Thanks Chad