The ol' Saturn was slowing down and gas mileage had plummeted about 30%-from 35 mpg to 24 mpg. I discussed the problem after a routine oil change and the service manager suggested I get a "tune-up". It had been about 70,000 miles. I brought the car back for a tune up and while its still too early to tell if the Saturn will get back to 35 mpg the Saturn is well on its way to 30+ MPG. Thanks for the suggestion and the tune up.