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Bough NGK Ruthenium sparkplugs #5328975 01/21/20 06:07 PM
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cronk Offline OP
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The wifes Nissan Quest recently rolled 100k miles, so I have been spark plug shopping. Rockauto had NGK Ruthenium for $7.90 each, which was cheaper than iridium, so I pulled the trigger and ordered them, along with a plenum gasket, since it has to be removed to access the 3 rear plugs.
Here are some pics if anyone was curious.

1579652076000-1065970541.jpg1579652112971-1774923087.jpg15796521391141622208132.jpg

2008 Ford F350
2008 Kia Spectra
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5328981 01/21/20 06:11 PM
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Nice. When you put them in, you might never have to pull them out again. smile


If you want the job done right......do it yourself.
Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329042 01/21/20 07:00 PM
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slacktide_bitog Offline
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Glad you got ruthenium smile

After you put those in and do the valve cover gaskets, you will never have to pull the intake again happy

Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329046 01/21/20 07:00 PM
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interesting plugs.....NGK has not let me down yet - when I change plugs I will look for these to see as they are getting harder and harder to replace as cars get newer...

Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329109 01/21/20 08:19 PM
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jayjr1105 Offline
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I just used these in my Mazda 3 Skyactiv 2.0L. I always like trying out new tech and these were cheaper than the laser iridiums my car calls for. They are running nicely.

[Linked Image]

Last edited by jayjr1105; 01/21/20 08:21 PM.

2013 Mazda 3 - PP 0w20
2005 Honda Odyssey - PP HM 5w20
Re: Bough NGK Ruthenium sparkplugs [Re: jayjr1105] #5329175 01/21/20 10:27 PM
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cronk Offline OP
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Originally Posted by jayjr1105
I just used these in my Mazda 3 Skyactiv 2.0L. I always like trying out new tech and these were cheaper than the laser iridiums my car calls for. They are running nicely.

[Linked Image]

Same here, I have used laser iridium for quite a while in most of my fleet, but these were cheaper and supposed to be the latest and greatest, so figured I'd give them a try.


2008 Ford F350
2008 Kia Spectra
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329251 01/22/20 05:51 AM
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SteveSRT8 Offline
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I was left out. My sig car shipped with Laser Platinums and they do not offer a Ruthenium plug for my application!


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
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Just like we go to Publix
Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329256 01/22/20 06:12 AM
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D1dad Offline
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How’s the car running with them? I just did the laser iridiums because AA was out of the standard irridiums and didnt have these yet. I personally think what ngk charges for the laser iridium is a crime. My 09 altima came with Nissan branded irridiums and my wife’s 2018 rogue has densos.

Re: Bough NGK Ruthenium sparkplugs [Re: D1dad] #5329308 01/22/20 08:00 AM
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Davejam Offline
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Originally Posted by D1dad
How’s the car running with them? I just did the laser iridiums because AA was out of the standard irridiums and didnt have these yet. I personally think what ngk charges for the laser iridium is a crime. My 09 altima came with Nissan branded irridiums and my wife’s 2018 rogue has densos.


Yeah, i paid ~20/each for my Honda Civic.

Anyone know the tech as to why they are so expensive? I'm willing to pay it since they seem to last without issue, but would like to understand why i'm paying so much.

Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329322 01/22/20 08:17 AM
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jayjr1105 Offline
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NGK takes advantage of people who think since they are the OEM plug, you HAVE to use them. Newsflash... you don't. My Honda van calls for laser iridiums too and I used $4.99 Denso Iridium TT's. Guess what, Van has run great since they've been in 30K miles ago. Just stick with Denso or NGK and you'll be fine. NGK also makes an iridium plug that is around $5, I think it's the IX series.


2013 Mazda 3 - PP 0w20
2005 Honda Odyssey - PP HM 5w20
Re: Bough NGK Ruthenium sparkplugs [Re: cronk] #5329339 01/22/20 08:35 AM
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D1dad Offline
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I’m ordering the densos for an engine swap and have no issues in doing so.

Re: Bough NGK Ruthenium sparkplugs [Re: SteveSRT8] #5329359 01/22/20 09:06 AM
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jayjr1105 Offline
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Originally Posted by SteveSRT8
I was left out. My sig car shipped with Laser Platinums and they do not offer a Ruthenium plug for my application!


Just run a Denso or NGK IX iridium plug for $5/each. Iridium is already a nice upgrade from platinum.


2013 Mazda 3 - PP 0w20
2005 Honda Odyssey - PP HM 5w20
Re: Bough NGK Ruthenium sparkplugs [Re: jayjr1105] #5329414 01/22/20 10:18 AM
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PimTac Offline
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Where do you get iridium plugs for $5 each?


2017 Mazda CX5
Valvoline Advanced Synthetic 0w20
Roki OEM filter.
Re: Bough NGK Ruthenium sparkplugs [Re: PimTac] #5329419 01/22/20 10:24 AM
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Imp4 Offline
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Originally Posted by PimTac
Where do you get iridium plugs for $5 each?

$5.94 for NGK 3764 Iridium IX from Jeff Bezos.

Same NGK 3764 Iridium IX from RA for $5.15

But somebody will probably say that they're fake....

NAPA has the same for $6.48 so the differential seems about right.

Last edited by Imp4; 01/22/20 10:47 AM.

2001 Mitsubishi Galant 2.4 - 165k+
Grandma's creampuff...
Re: Bough NGK Ruthenium sparkplugs [Re: Imp4] #5329425 01/22/20 10:36 AM
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2017 Mazda CX5
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Roki OEM filter.
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