Mine had NGK, so that is what I put back in.
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I finally changed out the OG Denso spark plugs on my wife's '10 RX350 at a shameful 415,000 kms. Wasn't idling rough but some low-rpms hesitation. Plugs still basically worked fine, though.
Pros: worked fine, very durable
Cons: low-rpms hesitation
Vehicle:
Lexus
Mileage: 415000 km
I have been using the ngk ruthenium sparkplugs and they work just fine, cheaper than the iridium's.
Pros: work just fine, cheaper
So I’m running an 03’ with the 2.4 and I put in NGK Laser Iridium but Denso is perfectly fine. I’m surprised how much your plugs cost if your paying list price. The cost price is how much I paid for mine at the parts store. Both plugs are fine to use.
Pros: Denso is perfectly fine
Vehicle:
Honda Accord
I’ve had my cx5 since August of 23. Put 48k on it since owning it, bought used at 44k it’s been a dream come true. cx5 just takes regular maintenance like oil changes spark plugs and brakes..and another plus it’s a very sharp looking vehicle inside an out.
Pros: sharp looking vehicle
Vehicle:
Mazda
Mileage: 77249 km
I always change about 10%-20% earlier than recommended, because I want to keep my coils healthy. A set of NGK iridium is $40. I went with the NGK Ruthenium (92274) because they were on sale (same price as regular iridium).
Pros: keep coils healthy
Vehicle:
Mazda
Mileage: 80000 km
Part number: 92274
Also check the spark plugs, sometimes people are cheap and buy autolites instead of NGK. Cheap plugs from previous owner give me a headache.
Cons: cheap plugs headache
We have tested a handful of plugs and wires (not the Chinese knock off stuff, but big name “Proformance” ones) and from a dyno stand point, looking at HP and TQ specifically… none of the wires out performed the stock AC Delco wires and the plugs all were real close to the same with AC Delco being close to the bottom and NGK being toward the top but negligible differences.
Pros: HP and TQ tested
Cons: negligible differences
Homie, do not run Autolite plugs.
Cons: do not run
Most Asian brands are pretty picky about spark plugs. You put Autolites in a 70s malaise-era Ford - not in a modern, sophisticated, computer controlled, turbocharged Honda.
Cons: picky about spark plugs
Vehicle:
Honda
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