Proper car maintenance will help a vehicle live longer, just as proper muscle maintenance will help you save a car from drowning. Be a hero with today's Groupon: for $18, you get an oil change at Oil Express (up to a $38.99 value). This Groupon is valid in Mason, Springdale, at the Eastgate location in Cincinnati, and at Oil Express's Tylers Corner Drive and Princeton-Glendale Road locations in West Chester.

Oil Express bolsters automobiles with 10-minute, full-service oil changes. Technicians first drain contaminated oil from the car and check it for lost keys before replacing it with up to 5 quarts of 5W20 or 5W30 oil, affixing a new filter in the process. Because Oil Express carries multiple kinds of oil, including synthetic options, drivers can be sure that their car will find something appetizing. After lubing the chassis, adroit mechanics duck down to inspect the undercarriage, then lift the hood to check the battery, turning their grease guns loose on the driver's door. Next, they top off most fluids (the first pint is free), eyeball belts and hoses, and adjust tire pressure before patting the car on the trunk and sending it on its way.

Though Oil Express sometimes offers discounts online, today's Groupon is still the best deal available.