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Old 02-08-2013, 12:45 PM   #24 (permalink)
Got MPG?
Join Date: Sep 2010
Location: Southern Alberta, Canada
Posts: 330

The Car - '09 Toyota Corolla CE Enhanced
Thanks: 13
Thanked 43 Times in 38 Posts
My '09 Corolla comes with iridium plugs OEM with a specific long reach specification. Each plug is located under a its own coil pack. All of this under an engine cover. The more one messes around un-attaching & re-attaching coil packs, moving & flexing plug wires etc. the more chances of failure. These components have to deal with heat and vibration so I don't need add excess flexing/handling to the mix. My Corolla's plugs are rated for 120,000 miles or 192,000 kms.

I have always used OEM specification for may cars. I have never had a plug failure or even a code showing misfire in any car I have owned.
2013 Honda Civic Si - 2.4L
OEM front to back belly pan from the factory.
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