How Often Should Platinum Spark Plugs Be Replaced?
2 Answers
Under normal circumstances, platinum spark plugs should be replaced at around 70,000 kilometers. Here are the relevant details about spark plugs: Recommended replacement intervals for platinum spark plugs: Ordinary nickel alloy spark plugs need to be replaced approximately every 20,000 kilometers; iridium spark plugs can last 60,000 to 80,000 kilometers before replacement. Important notes about spark plugs: The replacement cycle for spark plugs is not measured by time but rather by the mileage driven by the vehicle. There are two types of spark plugs: the first type, with ordinary copper cores, can last about 30,000 kilometers; the second type, which is relatively better, uses precious metal materials—platinum spark plugs can last 40,000 kilometers, while iridium spark plugs can last up to 80,000 kilometers.
I've been using platinum spark plugs for several years and found they last much longer than standard ones. Generally, it's recommended to replace them every 60,000 to 100,000 kilometers, but this isn't a strict rule. From my experience, it depends on driving habits – frequent short trips or driving in traffic jams means the ignition system works more often, causing faster electrode wear, possibly requiring inspection at 50,000 km. If you drive mostly on highways, they can last longer, still performing well at 70,000 km. Don't forget to have a technician check them during regular maintenance; increased electrode gap or excessive carbon buildup are signs they need replacement. New cars might come with platinum plugs pre-installed, and the manual usually suggests a mileage for replacement, like around 70,000 km for Japanese cars and nearly 100,000 km for German cars. If you experience difficulty starting or unexplained increased fuel consumption, don't delay – replace them promptly to avoid engine damage and wasted fuel. Spark plugs can be as cheap as a few dozen yuan each, and you can replace them yourself to save on repair costs.
