Just replaced my previously purchased NGK Iridium from Rockauto.com After 100k miles the looked like I put them in yesterday.
Pros: good condition after use
Mileage: 100000 km
Owner reviews for spark plug
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NGK Laser Iridium is the Honda spec and what I buy and have had no issues for 5x 105k intervals.
Pros: no issues, longest life
Vehicle:
Honda
I did my AOS and water pump/thermostat, coolant change, trans fluid change, spark plugs and coils ( one failed while driving, engine ran horrible , but I was real close to home).
Cons: one coil failed
Vehicle:
Porsche Cayman
I read that NGK plugs already have a coating on them, so I didn't apply any when I fitted new NGK BKR6EQUP plugs. Torqued them to 25Nm.
The old ones (also NGK) came out easily and I used a bit of tubing to hold the plug as I installed it into the thread, making sure it was threaded on straight before switching to a ratchet and torque wrench to screw down and tighten.
Pros: old ones came out easily
Part number: BKR6EQUP
I recently changed all the spark plugs and coils.
Pros: easy to work on
Vehicle:
Porsche Cayman
Every one of my internal combustion engines (3 cars, 2 motorcycles, zero turn mower, has NGK plugs.
Pros: consistent choice, reliable
Been using the cheaper Brisk brand and never had an issue for 20k miles.
Pros: no issues
Cons: cheaper brand
Mileage: 20000 km
The car works almost fine with the new bosch , i have a little vibration on idling .
Pros: car works almost fine
Cons: little vibration on idling
Vehicle:
BMW
Mileage: 225000 km
I put the expensive double spark, spark plugs into a Mitsubishi galant one time. Plugs were supposed to be hotter and make the car run better, after a couple weeks I swapped them back out for nkg’s that I checked the gap on, car ran better.
Pros: NGK's ran better
Cons: expensive plugs, poor performance
Vehicle:
Mitsubishi Galant
Never use bosch plugs. I work in a bosch car service and we won't use em, NGK only. Bosch stuff is garbage
Cons: Bosch stuff is garbage
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