Now at 110K miles and want to change my spark plugs, 'cuz don't know when / if they were ever changed before my ownership. Also, want to see what the cylinders have been up to by examining the condition of the plugs. NGKs' come highly regarded; what have all of you been using? What came as OEM? Looking at NGK ILKAR7C10 for my 2010 N/A. Concerned also about the counterfeit situation with NGKs'...

 

I've always stuck with NGK, and change them at 60K. Get them from an authorised dealer only and you'll not have any issue with counterfeit.

 

Same changed mine last week for NGK iridiums, is a fairly straight forward job on my 08 XKR

 

Another vote for NGK. Factory issued and I have no reason to use a different plug.
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