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Trying Out NGK Ruthenium Spark Plugs (NGK 94567)

Posted: Tue Oct 05, 2021 10:39 am
by BattleFX
Hey all, just wanted to share my experience with these spark plugs. The car has 203xxx miles.

I was shopping around for plugs and came across these and decided to give them a try. The longevity perk sold me as I knew the rear bank was going to be a real pain to change out. I'm really glad I bought these. The car is more "awake" and the gas mileage improved from 19.0 average mpg to 21.6 so far. Idle is also much smoother. I did not notice a big change in power. Throttle response improved a little. The real difference comes in smoothness and gas mileage. You get what you pay for and I am glad I spent the money on these NGK Ruthenium's. I got them from Rock Auto for about $9 per plug. I've seen $11 upwards each anywhere else, so Rock Auto is for sure the way to go. I hope this helps.

Re: Trying Out NGK Ruthenium Spark Plugs (NGK 94567)

Posted: Tue Oct 05, 2021 12:17 pm
by J Wikoff
Did you have to gap them? I put a set of these in a different vehicle and they did not come at the right gap despite being listed as for the specific application. I did get good mileage after getting the gap right, also.

Re: Trying Out NGK Ruthenium Spark Plugs (NGK 94567)

Posted: Tue Oct 05, 2021 1:08 pm
by BattleFX
No didn't gap, I just dropped them in and so far so good.