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AMSOIL 5W-50 Synthetic Mustang OilA reader asks: Do you sell an engine oil for a 2016 Mustang Shelby GT350? AMSOIL Signature Series 5W-50 is listed as a warranty approved oil for this car, but the AMSOIL application guide says “No AMSOIL Product Recommendation”. Can you please clear this up?

Our answer: AMSOIL Signature Series Synthetic 5W-50 Motor Oil is indeed suitable for the spectacular new Shelby Mustang GT350. The AMSOIL application guide simply has not been updated for many 2016 models as of yet. AMSOIL has assured us that “AMR” Signature Series 5W-50 is the correct motor oil for the Shelby GT350. Your car calls for a 5W-50 synthetic motor oil meeting the Ford WSS-M2C931-B motor oil specification. AMSOIL developed the Signature Series Synthetic 5W-50 to meet both the Ford WSS-M2C931-B and WSS-M2C931-C specifications. Signature Series Synthetic 5W-50 Motor Oil is a fantastic upgrade over the factory-fill oil which is Motorcraft SAE 5W-50 Full Synthetic Motor Oil.

What is The Difference Between Ford WSS-M2C931-B and WSS-M2C931-C?

These are motor oil specifications from Ford Motor Company. WSS-M2C931-C is the newer spec that supersedes WSS-M2C931-B. This means that a WSS-M2C931-C motor oil can be used in any application where WSS-M2C931-B is suggested.

Do We Sell An Oil Filter For the Mustang Shelby GT350?

We not have an oil filter for the 5.2L “Voodoo” engine just yet. Ford’s Motorcraft FL-2069-ST oil filter will have to do for now until the aftermarket develops replacement units.

For pricing and information on AMSOIL Signature Series Synthetic 5W-50 Motor Oil for high-output Mustang engines, contact us using the form on this page or call us at 1-800-748-5781.