Current Gasoline Engine Oil Spec’s

When you go to purchase oil for you gasoline or propane engine make sure it meets the correct specifications. Click Here for AMSOIL Gas Oils! Also save 25% by becoming a member or preferred customer. In 2005 the American Petroleum Institute (API) spec changed from SL in 2005  to SM, SN Dexos. These new oil specifications limit the amount of zinc and phosphorous (ZDDP) by approximately 30% less, this is detrimental to flat tappet camshafts & lifters! Now a new PCMO (passenger car motor oil) spec is coming in 2017 and AMSOIL will have it by September. It is designed for newer GDI engines that experience Low speed engine pre-ignition (LSPI), it will meet Dexos 1 gen 2 spec’ed oil, it will also meet the SP spec when API releases it. These new oils by AMSOIL are the pinnacle in performance with 75% more protection and 100 % protection against LSPI (low speed pre-ignition). Gas Direct Ignition (GDI) engines will be in most new vehicles by 2020!

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