Motor oil lubricates engines, inhibits corrosion, and conditions slip 'n' slides with superb efficacy. Ensure moving parts maintain their sense of slick with today's Groupon: for $17, you get an oil change at Slater's Auto Works (a $35 value) in Humble.

The ASE-certified mechanics at Slater's Auto Works purge vehicles of tired, tainted oil and replace it with a refreshing quaff of potable petroleum. In addition to gifting engines with up to 5 quarts of fresh oil and three adorable nicknames, the car-sitters will also top off fluids, grease the front end and nearby cake pans, and check tires' systolic and diastolic pressures. Thanks to a drive-up policy, auto owners can freely wheel their mechanic chariot sans appointment to the garage, where technicians will lavish equal opportunity service to both foreign and domestic models. Slater's Auto Works does charge extra for additional oil, synthetic oil, specialty filters, and joy rides on the car lift.