Some vehicles require copper spark plugs, while others require platinum or iridium plugs. It’s essential to consult your car’s owner’s manual or a trusted mechanic to determine which type of ...

Iridium is six times harder than copper and offers a 700-degree F higher melting point than platinum, though this comes at a much higher cost. That becomes important for owners of Gen III Chrysler ...

Ordinary plugs need replacing every 30,000 miles, but platinum and iridium spark plugs could last up to 55,000 miles. If your vehicle has symptoms like hard starting and poor idling, it could mean the ...

one reviewer pointed out that these copper plugs only last about half as long as their platinum or iridium counterparts. It’s highly recommended to replace spark plugs with the same brand the ...