Which spark plugs are best for general use?
Auto repair

Which spark plugs are best for general use?

09.11.2022 /

Spark plugs are important components of your ignition system. They are responsible for supplying a spark that ignites the fuel and starts the combustion process. However, not all spark plugs are the same. On the market you will find "regular" plugs, but there are also rather exotic-sounding alternatives. If you're wondering what's the difference between iridium, platinum, "Splitfire®" connectors and other options on the market, it shouldn't be confusing.

Spark plug types

First of all, high performance does not necessarily mean longer life. If you're thinking about spending a lot of money on high tech spark plugs, understand that you may need to replace them sooner than if you were just using OEM recommended spark plugs.

  • Copper: Copper spark plugs have the shortest lifespan on the market, but are the best conductors of electricity. You can expect to have them replaced about every 25,000 miles or so (a lot depends on your driving habits as well as the condition of your engine).

  • PlatinumA: Platinum plugs aren't really designed to provide better electrical conductivity, but they do provide longer life.

  • IridiumA: Iridium spark plugs are similar to platinum spark plugs in that they are designed to last longer. However, they can be finicky and a gap between them can damage the electrode, which is why many mechanics recommend against using them in a stock engine.

  • Exotic TipsA: You will find many different tips on the market, from split to double and even quadrilateral. Ostensibly this is supposed to provide a better spark, but there is no evidence that they do anything other than cost you more at the checkout.

Indeed, the best spark plugs for normal use are probably the ones supplied by the manufacturer in your car's engine. Check your owner's manual for the automaker's recommendations, or talk to a trusted mechanic.

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