How long can the original spark plugs of Changan CS35 last?

[LeMartin]

Spark plugs are generally replaced every 30,000 kilometers, depending on the carbon deposits at the ignition end and the discoloration of the ceramic ring. The lifespan of Changan CS35 platinum/iridium spark plugs is 50,000 to 70,000 kilometers. How to determine if a spark plug is damaged: Remove the spark plug and observe its condition based on the following appearance colors. A normal spark plug has a skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a skirt that is reddish-brown, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plug is contaminated with oil or deposits but is not damaged, it can continue to be used after cleaning off the oil and deposits. If the spark plug is severely damaged, with signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates that the wrong heat range was selected or the mixture is too rich, with oil seeping up.