Mobil Super? 1000 oils are formulated from quality base stocks combined with modern performance additives to give your engine the protection it requires and the performance you expect from your vehicle under a wide variety of operating conditions. Mobil Super 1000 oils are available in three multi-viscosity grades: SAE 5W-20, 5W-30 and 10W-30. Mobil Super 1000 5W-20, 5W-30 and 10W-30 meet the warranty requirements where an American Petroleum Institute (API) certified oil is specified. All three products meet or exceed ILSAC GF-5 and API SN Plus and are backward compatible with earlier performance levels such as API SN, SM, SL, and SJ. The American Petroleum Institute (API) classifies these three products as “Resource Conserving” engine lubricants.