Ray's Radiator is a family-owned business in Grass Valley with over 20 years of service. Customers praise the quick and friendly service, often completing smog checks in under 10 minutes. The mechanics are noted for their impeccable work and social attitude, making clients feel comfortable and valued. Many reviews highlight the exceptional customer service, with one instance where the team went above and beyond to help stranded customers by offering a ride home and delivering the vehicle the next day. Ray's Radiator is also recognized for having the best smog prices in town, and sometimes even offers complimentary donuts. Overall, the business is highly recommended for its trustworthy and courteous service, making it a go-to choice for vehicle maintenance in the area.