Oil-Chem Research, the manufacturers and marketers of zMAX, is a subsidiary of Speedway Motorsports, Inc. (SMI). SMI purchased Oil-Chem (then called TechniFlyte) in 1995 with immediate plans to launch zMAX as a consumer product in the automotive aftermarket. The SMI relationship adds greatly to the promotional and marketing resources of zMAX and Oil-Chem Research Corp. SMI company officers are involved with strategic planning and budgeting activities of zMAX, as well as any responsibilities to the company shareholders. Bruton Smith is Chairman / CEO of Speedway Motorsports, Inc. and William Brooks, SMI CFO.

zMAX is now proud to be the Official Micro-lubricant of Speedway Motorsports Inc. through the following race tracks and properties owned by SMI: