If your car takes iridium spark plugs, or you DIY your tune-ups by buying plugs in the aftermarket, get ready to unlock a new ...

Iridium is even harder than platinum, so these plugs were intended to last longer. They are also claimed to slightly increase combustion efficiency. The newest of the breed are ruthenium spark ...

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 ...

It promotes the benefits of copper spark plugs over longer-lasting iridium plugs, which makes sense when trying to wring every last advantage out of an engine by increasing power regardless of cost.

Your engine’s spark plugs are one of its smallest and most important, parts. We look at some of the best. The engine in your car, truck, or crossover operates on the simple principle of ...

We may receive a commission on purchases made from links. Spark plugs have come a long way, as they're more durable and reliable than ever before. In fact, unlike most air filters and fluids that ...

Thanks to modern electronic ignition systems, computerized engine controls and plugs that have platinum and iridium electrodes, spark plugs now often last more than 100,000 miles. As they wear ...