IMHO I believe my original plugs will last about 100K miles? I don't believe any spark plug will increase MGH or HP in any significant amount. My advice is to replace them with OEM originals. BTW, NGK Iridium rates better. Good luck.I just put these in,supposedly the latest and greatest
Might be all marketing hype
Introducing the New DENSO Iridium TT Spark Plug - YouTube
So I went online to Canadian Tire and found these : https://www.canadiantire.ca/en/pdp/ngk-laser-iridium-spark-plug-1-pk-0183619p.0180323.htmlI think the latest greatest are the NGK RUTHENIUM.