4b8cf347_ations___oilspecifications_org__Service_Gasoline_Engines
["S"] SL [Status] 2001 Gasoline Engine Service [Service Gasoline Engines] 
Category SL was adopted to describe engine oils for use in 2001. It is for use in service typical of gasoline engines in present and earlier passenger cars, sports utility vehicles, vans and light trucks operating under vehicle manufacturers recommended maintenance procedures. Oils meeting API SL requirements have been tested according to the American Chemistry Council (ACC) Product Approval Code of Practice and may utilize the API Base Oil Interchange and Viscosity Grade Engine Testing Guidelines. They may be used where API Service Category SJ and earlier categories are recommended.
API Engine Oil Lubricant Specifications - oilspecifications.org
Service Gasoline Engines