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.
Trying Out NGK Ruthenium Spark Plugs (NGK 94567)
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J Wikoff
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- Year and Trim: 1992 SSE
2009 G8 GT - Location: Central Illinois
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Re: Trying Out NGK Ruthenium Spark Plugs (NGK 94567)
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.
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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BattleFX
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- Year and Trim: 2004 Bonneville GXP
200,000 Mile Member - Location: Texas
Re: Trying Out NGK Ruthenium Spark Plugs (NGK 94567)
No didn't gap, I just dropped them in and so far so good.