How many kilometers should the Regal spark plugs be replaced?

[DelZachary]

The Regal spark plugs should be replaced every 60,000 kilometers. Methods to determine if the spark plugs are damaged: Remove the spark plugs and observe them. The condition of the spark plugs can be judged based on their appearance and color. A normal spark plug has an insulator skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm, and no signs of electrode burning. If the spark plugs are contaminated with oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are 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 plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong heat range was selected or the air-fuel mixture is too rich, with oil creeping up.

[McLincoln]

The recommended replacement interval for the Regal's spark plugs is generally around 80,000 kilometers. Based on my years of experience driving this model, the manual's suggestion of 80,000 to 100,000 kilometers is quite reliable. When my car reached 75,000 kilometers, it suddenly had difficulty starting. Upon inspection, the spark plugs showed carbon buildup and wear. After replacing them, the engine immediately ran much smoother. The Regal commonly uses platinum or iridium spark plugs, which are quite durable, but don't delay replacement too long, especially in city traffic where carbon buildup happens faster. It's best to check the electrode condition every 10,000 to 20,000 kilometers. The cost isn't high—just a few hundred yuan—and it can prevent increased fuel consumption and ignition issues. If ignored, you might end up stranded on a long trip, turning a minor issue into a major one. Remember, prioritize maintenance to ensure safe and worry-free driving.

[VanJoseph]

I've been driving a Buick Regal for over a decade and always change the spark plugs every 60,000 km. The manual might recommend a longer interval, but I believe earlier replacement is safer. Severe wear occurs in congested urban driving - once I delayed replacement and it caused engine misfire, costing me a lot in repairs. I suggest following the manual's 80,000 km maximum, but adjust based on your driving habits. Frequent highway driving or harsh weather accelerates aging. Regularly check electrode gaps, maintaining 0.7-1.0mm range. The 400 yuan cost offers good value. Safe driving relies on these maintenance details - don't wait for major issues to regret. Developing these habits can extend your car's lifespan.

[MacKatherine]

The recommended mileage for replacing the spark plugs on the Regal is generally 80,000 kilometers, as confirmed by checking the manual. For a new car, follow this guideline directly. Not replacing them may lead to increased fuel consumption or slower engine starts, affecting performance. I don't do it myself for my Regal; I have the repair shop check the spark plug condition during maintenance, which is hassle-free. The cost is a few hundred bucks, well worth it. Keeping to this schedule ensures smooth driving without issues. The manual is the boss—following it saves trouble.