I used NGK at 100k miles and have been happy with them.
Pros: happy with them
Vehicle:
Ford
Mileage: 160934 km
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Put the one piece Brisk in so that you don’t have to relive that again.
I installed Denso a few weeks ago.
Pros: installed recently
Unfortunately no--replace them. The electrodes wear down and become less efficient. The good news is that iridium plugs have a tremendous lifespan. You're supposed to change them every 100k miles/167k km.
Pros: tremendous lifespan
Cons: electrodes wear down
Vehicle:
Toyota Yaris
Mileage: 167000 km
Skip the genuine spark plugs and just get NGKs. And skip the genuine oil change kit and get pentosin if you wanna stay oe
Pros: oe quality
I ran the Brisk plugs for 6200 miles .. a bit over the 5K recommended interval. Installed Denso 5749 plugs this weekend and maybe I'm imagining things, but it seems a bit less temperamental at highway speed passing pulls. With the Brisk's installed lately I was getting some hesitation with WOT. No more.
Pros: less temperamental, no hesitation
Cons: hesitation with WOT
Mileage: 10000 km
Part number: 5749
Since I mounted Bosch 4-prong spark plugs, fuel economy has improved a lot. Gone from 12-13 km/l to nearly 15 km/l.
Pros: fuel economy improved
Vehicle:
Mazda
I went with OE ignition coils and bosch spark plugs and the misfire went away for a couple days but came back on my drive to school.
Pros: misfire went away
Cons: misfire came back
Vehicle:
Volkswagen
Mileage: 160934 km
Do yourself a favor and throw Autolite plugs in the garbage.
Cons: bad quality
Yep. Ordered some NGK iridium plugs on Amazon, 2600 miles later the car was misfiring. The gap was toast. Counterfeit for sure.
Cons: misfiring, gap toast
Mileage: 2600 km
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