Spark Plug Metallurgy Comparison Chart
Mileage / Service Life
Noble metals will hold up better and have less wear in the harsh environments of today's vehicle engines.
Less Mileage
More Mileage
Fuel Efficiency
Fine wire electrodes produce more focused and consistent ignitability resulting in less fuel consumption.
Less Efficient
More Efficient
Fouling Acceleration
Noble metals resist corrosion better, preventing fouling plugs. Spark plugs that are less likely to foul provide quicker acceleration.
Slower Acceleration
Quicker Acceleration