Re: Best Spark Plug for 2010 3.7
I run either plain ole' copper NGK's or Denso's in everything I've owned for the last 20 years and have never had issues. This includes multiple vehicles, motorcycles, jetskis etc etc. I'm not into the precious metal plugs and don't care about extending spark plug longevity. I do 30k mile plug changes in the vehicles as part of a major service (motorcycle and jetskis I do different) and most times the plugs I pull out look very good.