HPD is Honda's racing company in North America and is a wholly-owned subsidiary of American Honda Motor Co., Inc. Founded in 1993, HPD is the technical operations center for Honda's high-performance racing programs and specializes in the design and development of race engines, chassis and performance parts, as well as technical and race support. Red Line Oil is the official lubricant partner of HPD’s Honda Racing Line program and works with HPD to ensure the highest level of engine performance and protection wherever Red Line products are used. This includes supplying Red Line Synthetic Oil as the official factory fill for the current-generation of Honda Civic Si race cars, engineered by HPD, and used in North American touring car racing. Red Line lubricants are also used in the Civic-powered F4 U.S. Championship and F3 Americas open wheel series that provide a solid foundation for drivers aspiring to the highest levels in motorsport.