







Laser Iridium vs Iridium IX: The Short Answer Standing in the auto parts aisle, two NGK iridium spark plugs look nearly identical. Both carry a fine iridium tip, both are designed for modern engines,...
The Short Answer: What a Conventional Spark Plug Is and When It Is the Right Choice A conventional spark plug — also called a nickel-copper or copper-core plug — is the standard parts-catalog ignitio...
The Main Spark Plug Families Modern engines generally run on five spark plug families: nickel-copper, single platinum, double platinum, single iridium, and double iridium. If you need a direct conclu...
A spark plug wear chart tells you exactly one thing that matters most to an engine's health: how much of the electrode has eroded away and whether the gap has widened past the point where combustion ...