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Have a new to me 2011 Fusion with 3.0 liter V6, 140,000 miles; runs well, starts easily. Original plugs were recommended to be replaced at 100,000 miles, so past due on lifetime.
Pulled the front 3 plugs (will do the others soon) and replaced with NGK Ruthenium plugs. The original plug gap had increased from 0.045-0.049" (owners manual spec) to 0.071"
The new Ruthenium plugs came pre-gapped at 0.048" and look nice - they ought to at $12 a copy (NAPA). NGK TR5AHX, Stock # 94567
Thought you'd like to know what 140,000 miles do to your plugs !
OEM Plugs at 140,000; 3.0liter
