Over the decades, ceramic improvements, electrode design, tip construction and advancements in metallurgy have dramatically improved the life and performance of these relatively low-priced engine components.
The original plugs – designed for low-speed and low-compression engines – had a life expectancy of far less than 1,000 miles, compared to today’s premium plugs made with high-quality precious metals such as platinum, iridium or ruthenium that are routinely expected to last for 100,000 miles or more.
This video is sponsored by The Pronto Network. Â Â Â