Welcome to Ray’s OK Service. Conveniently located in Greenfield, Wisconsin on Loomis Road at I-894. We specialize in the maintenance and repair of foreign and domestic vehicles. Ray’s OK Service originally opened in 1972 by Ray Kurian Sr. and sons. As a family, they built a thriving auto repair business. A company that prides itself on skilled automotive repair services, up to date technology, fair honest pricing, and cordial customer service. Now serving 3rd Generation Customers!!