2003 GT - Ruthenium Spark Plugs?

1.8-liter VVTL-i (2ZZ-GE) and VVT-i (1ZZ-FE) engine, transmission, exhaust, intake, and performance tuning discussions
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Phoneman
Posts: 29
Joined: Fri Jan 08, 2021 9:54 pm

2003 GT - Ruthenium Spark Plugs?

Post by Phoneman »

It's time to change the spark plugs in my 2003 Vibe GT and while sourcing OEM replacement plugs (Denso SK20R11) I noticed that NGK has a Ruthenium spark plug specified for use in the 2ZZ that claims longer life and better performance.

Has anyone tried these plugs, and if so, what were the results?
2005 Vibe - 240k
2003 Vibe GT - 117k (totaled)
2003 Vibe GT - 117k
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joatmon
Posts: 10020
Joined: Fri Mar 21, 2003 5:19 am
Location: SMC MD

Re: 2003 GT - Ruthenium Spark Plugs?

Post by joatmon »

I hadn't been paying enough attention to even know that ruthenium plugs were a thing. The internet stuff I found is inconclusive, claims of performance can be placebo effect, and its too soon to know about longevity.

All that being said, they seem to cost about the same as the iridium ones, so I vote for giving them a try and letting us know how it goes
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