Air tools trill beneath racks of synthetic and standard oil at Acclaim Auto Care. Technicians perform oil changes, brake services, and preventive maintenance packages, drawing on gear and parts certified by an original equipment manufacturer. They also keep the latest diagnostic technology on hand to properly differentiate between urgent warning lights and dashboards trying to catch the eye of a supercomputer. Jugs of colorful liquids top off power-steering, transmission, and coolant fluids as the crew moves busily through the shop, installing superchargers and carbon-fiber enhancements.