Review on DiamondFIRE Technology: Unleash Your Car's True Power with E3 Spark Plug E3.52 Premium Automotive Spark Plug (1 Pack) by Matt Minette

E3 makes great spark plugs. I put them in all my small engines (mowers, push mowers, snow blowers, weed cutters etc.) and they make starting very easy and reduce fuel consumption which also means fewer emissions/pollutants. Very happy with it in them. I have not used them on any vehicle as I am a firm believer that iridium spark plugs work for larger engines (cars, trucks, quads, boats) but they work great in smaller engines and I highly recommend trying them. .