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The Engine Oil Industry Base Oil Interchange (BOI) and Viscosity Grade Read Across (VGRA) guidelines developed by the American Petroleum Institute (API) provide a means to significantly reduce the time to market for current technology engine oils. This process has several advantages including the public display of data and a consensus evaluation of the submitted data. The process also has several limitations including timeliness of the consensus process, and the applicability and flexibility of an all-encompassing, industry-wide guideline. An enhancement to the all-encompassing, industry-wide consensus process is the Single Technology Matrix (STM). The idea behind this approach is to use sufficient data from a single technology to develop and use BOI for that specific technology. The advantages of the STM include improved technical merit, timeliness and flexibility in establishing BOI.