OldSchool Posted September 29, 2009 Report Share Posted September 29, 2009 Typically, I put about 1K miles on my cars at varying speeds in order to "break in" the motor before I really start putting a lot of load on it. Is this necessary with the 10 Shelby? I have heard different people say that with newer cars this is no longer needed. Link to comment Share on other sites More sharing options...
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