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Recent advances in the powertrain design of gasoline engines to meet environmental regulations have posed new challenges to the engine oil development. Smaller displacement engines, often with turbochargers, developed to meet higher fuel economy standards demand higher performance engine oils in conventional areas (oxidation and deposit control, fuel economy), and completely new areas (Low-Speed Pre-ignition [LSPI], turbocharger performance). Formulating engine oils which can simultaneously meet these competing demands will become more complex with increasing performance requirements. Of particular interest for upcoming engine oil development is the phenomenon of low speed pre-ignition (LSPI). LSPI is an abnormal combustion event in which lubricating oil has been observed to play a role.