Ford Mustang Forum - View Single Post - When to change spark plugs
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post #2 of (permalink) Old 10-26-2013
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<3_3.7's Avatar
Joined: Aug 2013
Location: The Streets
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Manual says 100,000 miles.

Refer to pages 303, 308 and 328 of the owner manual for the motorcraft part number, gapping and change interval.

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