Without motor oil, a car's engine would quickly break down, resulting in raging tears of auto fluids and unsolicited confessions to benign crimes such as excessive turn signaling. Keep your car emotionally stable with today's Groupon: for $17, you get an oil change and 22-point inspection at Zolman Tire, with six locations in Granger, Mishawaka, South Bend, and Niles (up to a $39.95 value). See the sidebar for specific address information.

The experienced mechanics at Zolman Tire keep cars road-ready with diligent care that has earned their shop the title of Reader's Choice Favorite for auto repair in the South Bend Tribune every year since 2003. During the oil-change service, auto experts swap out dirty filters while cars slurp down up to six quarts of conventional or synthetic-blend oil, resolving internal-combustion conflicts and keeping the engine cool enough to be the lead singer in a Boston cover band. Then, Zolman's motorcar magicians inspect other fluid levels and perform a 22-point vehicle inspection to ensure various systems are performing at their optimal levels.

Although Zolman Tire sometimes offers other discounts online, this Groupon still represents the best deal available.