I know a few things I should do on a just bought car (spark plugs, oil, air filter, belts, hoses) Are there any other maintenance procedures you would suggest for a 91 CRX HF that I just bought about a month ago? Its been running ok, but its only getting 32 MPG and Ive been told by many that it should be getting closer to 40. Just wondering if you guys had any ideas why my MPG would be lower than expected.