Review on 🔥 NGK BKR5E-11 Spark Plug, Pack of 4 - Fuel-Optimized Performance Solution by Clinton Delgado

I have over 200,000 on my Mazda MX-5 Miata. Since I run at relatively high RPMs and the engine consumes excess sparks - it fires the spark plugs twice as often as most engines - I change the spark plugs every other oil change. I've experimented with Bosch and Iridium spark plugs. I've noticed significant performance and economy gains with all brands and types of new spark plugs, but even more so with NGK. They also proved to be more reliable and consistent. I also like the NGK Iridium, but I haven't noticed any difference in performance and can't justify the extra price. If they were the same price I might buy Iridium but only for the placebo effect.