vs
Spark plug Autolite or Denso
I've been running Denso Iridium on 7 Saabs for years.. both 9.3 V6 and 9.5 2.3l... never an issue on any after 100s of thousand of miles.
Pros: no issues, long lasting
Vehicle:
Saab
Eqt recommends NGK 4905 or Denso 5749. I personally run the densos and they have been good so far, they spark ????????♂️.
Pros: they spark
Vehicle:
Volkswagen Golf
Part number: 5749
I'd opt for a set of 1 step colder plugs. Ideally non projected tip like [Denso 5749](https://www.fcpeuro.com/products/vw-spark-plug-denso-5749) or [NGK 4905](https://www.fcpeuro.com/products/vw-spark-plug-ngk-r74388). Though these are costly.
Pros: non projected tip
Cons: can be costly
Since spark plugs don’t cost that much I played around with a few. My 05 TJ like the Autolite APP985 the best. Hated the NGK ZF5RN the most.
Pros: Autolite APP985 the best
Cons: Hated the NGK ZF5RN
Vehicle:
Jeep
Cylinder Misfires started on #2, progressed to all, replaced all spark plugs and all spark plug wires. Cylinder misfires now gone. Spark plugs and spark plug wires all in bad condition
Pros: cylinder misfires gone
Cons: spark plugs in bad condition
About 6 weeks ago I finally changed the spark plugs. So I put somewhere near 180,000 miles on a set of Autolite spark plugs. Two of the spark plugs the center electrode was completely gone. I don't know how the fuck the engine ran and I certainly don't know how it did not throw a code , it still ran very smoothly even at idle.
Pros: ran smoothly even idle
Cons: electrode was completely gone
Vehicle:
Ford Ranger
Mileage: 289682 km
Denso or ngk. Bosch at worst. I would recommend against the off brand in your photo.
Pros: Denso or NGK
Cons: Bosch at worst
I purchased some Autolite XP Iridium spark plugs earlier this month and immediately installed them. Within a mile of driving, the car started shaking violently and the check engine light came on. I immediately turned around and reinstalled the old plugs and the problems went away.
Cons: car started shaking violently
Autolite are pure trash maybe suitable for a lawn mower if you like breaking plugs off in heads
Cons: pure trash, breaking plugs
Autolites gotta be the worst fkn plugs on the market rn.
Cons: worst plugs on market
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