Danny2007 Posted October 22, 2007 Report Share Posted October 22, 2007 This is my first Shelby...my first Ford....I had a 1994 Trans AM GT 5.7L I used Royal Purple 5w-30. I'm being told that Royal Purple does not meet Fords new requirments. Any suggestions? Ames oil or Motorcraft? Thanks, GT Danny Link to comment Share on other sites More sharing options...
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