Cars need regular oil changes to keep them running in top form, just like winning racehorses need periodic blood transfusions to keep the drive for victory coursing through their veins. Treat your chariot like a champ with today's Groupon: for $79, you get an oil change (a $24.46 value), a new oil filter (an $8.95 value), an A/C charge (a $142 value), and a tire rotation (a $30 value) at Rosslyn Automotive in Fairfax (a $209.70 total value including tax, labor, and parts).

Rosslyn Automotive's skilled technicians keep highway chariots galloping smoothly with tender loving care. The 90-minue service begins with an oil change, as thirsty motors are fed up to five quarts of fresh lubricant and fitted with a new filter. Next, sputtering A/C units are charged to improve their chilling capabilities and assure that passengers remain as cool as a cucumber gazpacho. Finally, auto gurus rotate tires to extend their life spans and improve road safety.