Cold-weather spark plug picks

Scouttrail

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Dec 16, 2025
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When the temperature plummets and you're battling the cold, getting your engine to start can feel like a roll of the dice. Some people have their favorite spark plugs that they swear by for better ignition in frigid conditions, while others prefer to stick with what they know.

What spark plug recommendations do you have for ensuring engines run smoothly when the weather turns chilly?
 
Switched to NGK plugs last winter after struggling with cold starts. It got way easier to start up, even when it was freezing. Still using them.
 
Used to work outside in the freezing cold, and my saw would never start. I switched to Bosch plugs because I heard they were better for the cold. Big difference less misfires, started faster, and way less stress. It really was a lifesaver during those long winter jobs.
 
Sounds like Bosch has a strong following, hard to argue with that kind of track record.
 
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