vs
Spark plug Autolite or Denso
DENSO , Iridium Long Life, SK20HPR-L11 Spark Plug
Pros: Iridium Long Life
Vehicle:
Subaru
Part number: SK20HPR-L11
I would stick with the specd Denso, leave the coils alone.
Vehicle:
Toyota Prius
I recently was having a misfire in cylinders 2/3, and new plugs and ignition coils cleared it up.
Pros: cleared up misfire
I have a 3.5 ecoboost. All 6 of my Ford plugs failed because of cracks. I replaced them with AutoLite iridium XP5863. They are all still going strong after over 50k miles.\n\nThe Ford plugs failed with a cylinder misfire error code. The engine would also bog down under havy accelaration
Pros: still going strong
Cons: cracks, cylinder misfire
Mileage: 80467 km
Part number: XP5863
DENSO ZXE24HLR7 is also an excellent OE plug.
Pros: excellent OE plug
Part number: ZXE24HLR7
I already replaced the spark plugs with the Denso ones I listed though... Is this bad?
Vehicle:
Lexus
Mileage: 60000 km
I highly recommend avoiding anything other than exactly what is specified in your owners manual, I currently have bad gas mileage because I was too curious to see if the desno two tip would do as good as the other stuff.
Cons: bad gas mileage
I agree with everyone saying NGK but I would also like to recommend you do not buy an autolite if you need a substitute, they have horrible quality control.
Cons: horrible quality control
definitely not ok, they are spent, also Denso>NgK any day of the week
Pros: Denso better than NGK
Cons: they are spent
Probably going to need to pull them again within a couple years. Autolites are the absolute worst sparkplugs.
Cons: absolute worst sparkplugs
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