Recent Topics
How drunk do you have to be to do this?
by dishdude - 02/17/20 11:09 PM
At least they show you
by Jake777 - 02/17/20 10:04 PM
Ryan Newman update
by P10crew - 02/17/20 09:17 PM
Thoughts on 2015+ Kia Sedona?
by 92saturnsl2 - 02/17/20 09:16 PM
Quiet riding tire
by wolf_06 - 02/17/20 08:27 PM
Where did the Ryan Newman thread go??
by P10crew - 02/17/20 08:02 PM
2013 FX4 repair.
by marine65 - 02/17/20 07:36 PM
New gaming build shutting down on Metro 2033
by Cujet - 02/17/20 07:09 PM
Snapon
by P10crew - 02/17/20 06:51 PM
Conventional or Synthetic
by charmer37 - 02/17/20 06:49 PM
Jeep Wrangler 3.0L Diesel
by HighbrowHillbill - 02/17/20 06:36 PM
94 B4000 overheat Eureka
by HyundaiAbuser - 02/17/20 05:48 PM
PP Euro 5w40 SN Plus formulation VOA
by BurntMusic - 02/17/20 04:35 PM
Bicycle Shops
by CourierDriver - 02/17/20 04:26 PM
EBC Brakes
by hatt - 02/17/20 04:17 PM
Dream Car
by MrQuackers - 02/17/20 04:06 PM
What are people using now for outdoor antennas?
by BAJA_05 - 02/17/20 02:49 PM
3.0L TDI
by Shorthorn - 02/17/20 02:48 PM
Mountain Bike Whee/Tire Sizes!
by jcartwright99 - 02/17/20 02:21 PM
Newest Members
ratt, boureesub, Bayrim, p51paul, V10
70733 Registered Users
Who's Online Now
35 registered members (avi1777, bbhero, bullwinkle, 53' Stude, Black_Thunder, bmod305, 2 invisible), 894 guests, and 24 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics301,599
Posts5,198,797
Members70,733
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Page 1 of 5 1 2 5
Iridium vs Ruthenium spark plugs #5087367 04/26/19 03:09 PM
Joined: May 2015
Posts: 1,112
P
Popsy Offline OP
OP Offline
P
Joined: May 2015
Posts: 1,112
So, spark plug replacement time for the Mazda (2.3 engine).
[Linked Image]

On the right, standard iridium that are OE on the car.

Price is identical, actually the Ruthenium are a few cents cheaper, but that's negligible.
[Linked Image]


Gap is the same, form factor too. I always thought the Laser iridium meant double iridium electrodes, but now that I look closely I can only see one ?
Not sure about the replacement interval, but it's a very long thing like 100k Km.

Ruthenium seem to have two visible pointy electrodes of whatever fancy metal they are advertised.
[Linked Image]

There is little I can find about Ruthenium spark plugs, except it's the new sliced bread, better, last longer, etc etc.
If the Laser iridium have indeed only one iridium (or platinium + iridium) pointy electrode, I can see the Ruthenium lasting longer.

So, what's your take ? Can you educate me on spark plugs ? On most 4 cylinder they are real easy to replace so I always them as a maintenance item, replace every few years and don't think twice about it.


96 Barchetta, 300V 5W40 | Forfour 95, M1 0W40
Mazda 6 2.3, Castrol 0W30 | Colt Ralliart, 300V 5W40
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087375 04/26/19 03:20 PM
Joined: Oct 2010
Posts: 10,377
Astro14 Offline
Offline
Joined: Oct 2010
Posts: 10,377
Ruthenium is a metal. Element 44. It has a slightly higher melting point than iridium. Element 77.

Do they perform better? Last longer?

No idea.

Last edited by Astro14; 04/26/19 03:21 PM.

32 Packard 15W40
01 Volvo V70 T5 0W30 AMSOIL SS
02 Volvo V70 T5 0W30 Edge
02 Volvo V70 XC 0W40 Edge
05 MB S600 0W40 M1
16 Tundra 1794 5W30 Pennzoil Ultra
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087461 04/26/19 04:33 PM
Joined: Mar 2006
Posts: 9,614
D
dailydriver Offline
Offline
D
Joined: Mar 2006
Posts: 9,614
I have a set of factory heat range Rutheniums for this 1.6 EcoBoost which I have not yet installed.

I will do so right before the summer rally working season to see if my long highway drives to get to these events yield any better mileage (or performance) than the factory Motorcrafts still in the car at this point. wink


2016 Ford Fiesta ST 17K miles
Ravenol REP 5W-30
Fram XG3600 filter
Ravenol MTF-2 in the IB6 transaxle
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087462 04/26/19 04:34 PM
Joined: Apr 2014
Posts: 1,380
G
geeman789 Offline
Offline
G
Joined: Apr 2014
Posts: 1,380
Don't Iridium plugs already last 100 000 miles ? Are we moving to LIFETIME plugs now ?


2011 SUBARU Impreza 5-door manual / 2016 HONDA Pilot / 2011 MAZDA 2 auto
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087465 04/26/19 04:36 PM
Joined: Sep 2014
Posts: 1,718
W
WobblyElvis Offline
Offline
W
Joined: Sep 2014
Posts: 1,718
The dual tip is not necessary for most applications. In a waste spark system the spark jumps the opposite way on every second plug, that why the special tip is needed on those plugs. Over time the spark tends to carry some of the base metal from the plug with it eroding the electrode. These fancy metals prevent that from happening.

Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087467 04/26/19 04:39 PM
Joined: Jul 2014
Posts: 1,296
Number_35 Offline
Offline
Joined: Jul 2014
Posts: 1,296
Funny, a few weeks ago I bought the same Ruthenium plugs, to replace the Iridium plugs in our '09 Mazda (with the same 2.3 l engine). Per NGK, G-Power Platinum plugs are good for 60K km, Iridium IX 100K km, and Iridium Laser 120K km. Not sure about the Ruthenium HX plugs, as they were not around when I contacted NGK about the longevity of the various grades. Nevertheless, I expect them to last at least as long as the Iridium Laser plugs. My main reason for the upgrade is to eke out that last little bit of fuel economy, and to help prevent undue stress on the coils.

Agreed, on the Mazda 2.3 they're easy to change.

Here's NGK's qualitative description of the Ruthenium plugs:

http://www.ngksparkplugs.ca/products-spark-plugs-Ruthenium%20HX.cfm

Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087476 04/26/19 04:52 PM
Joined: Feb 2003
Posts: 9,301
C
Cujet Offline
Offline
C
Joined: Feb 2003
Posts: 9,301
We are getting to the point where plugs fail in other ways, well before the electrodes are worn out. Internal resistor breaks down, insulator cracks or the seal fails.


People who count on their fingers should maintain a discreet silence.
Re: Iridium vs Ruthenium spark plugs [Re: Cujet] #5087485 04/26/19 05:00 PM
Joined: May 2015
Posts: 1,112
P
Popsy Offline OP
OP Offline
P
Joined: May 2015
Posts: 1,112
Agreed. I've seen cracks in insulator, plugs fooled by carbon deposits...well also electrode very worn out, but the plugs probably weren't iridium, more platinium maybe ?

I guess in this Mazda application they are cheap and easy to replace, so why not get the new NGK top of the line ? It won't probably make any difference, but they cost the same smile
It'd be interesting to see a slight fuel economy improvement, I doubt so with a modern coil on plug ignition system, but why not.


96 Barchetta, 300V 5W40 | Forfour 95, M1 0W40
Mazda 6 2.3, Castrol 0W30 | Colt Ralliart, 300V 5W40
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087495 04/26/19 05:07 PM
Joined: Mar 2008
Posts: 9,340
S
slacktide_bitog Offline
Offline
S
Joined: Mar 2008
Posts: 9,340
Iridium is already good for 100k, but the ruthenium is definitely worth it on cars where it's hard to do them on. Almost any transverse V6/V8, 4th gen Camaro/Firebird, Aerostar, Subarus, etc.

For cars where it's easy to do them, no need to waste the extra money on the ruthenium smile

Re: Iridium vs Ruthenium spark plugs [Re: slacktide_bitog] #5087508 04/26/19 05:18 PM
Joined: May 2015
Posts: 1,112
P
Popsy Offline OP
OP Offline
P
Joined: May 2015
Posts: 1,112
In my case they are a few cents cheaper than the Laser Iridium wink


96 Barchetta, 300V 5W40 | Forfour 95, M1 0W40
Mazda 6 2.3, Castrol 0W30 | Colt Ralliart, 300V 5W40
Re: Iridium vs Ruthenium spark plugs [Re: WobblyElvis] #5087511 04/26/19 05:24 PM
Joined: Jul 2008
Posts: 1,374
R
rubberchicken Offline
Offline
R
Joined: Jul 2008
Posts: 1,374
Originally Posted by WobblyElvis
The dual tip is not necessary for most applications. In a waste spark system the spark jumps the opposite way on every second plug, that why the special tip is needed on those plugs. Over time the spark tends to carry some of the base metal from the plug with it eroding the electrode. These fancy metals prevent that from happening.

Is that how a waste spark system works ? I always thought it just means that the plug fires twice as often.

Re: Iridium vs Ruthenium spark plugs [Re: rubberchicken] #5087574 04/26/19 06:21 PM
Joined: Jun 2012
Posts: 2,401
O
oldhp Offline
Offline
O
Joined: Jun 2012
Posts: 2,401
Originally Posted by rubberchicken
Originally Posted by WobblyElvis
The dual tip is not necessary for most applications. In a waste spark system the spark jumps the opposite way on every second plug, that why the special tip is needed on those plugs. Over time the spark tends to carry some of the base metal from the plug with it eroding the electrode. These fancy metals prevent that from happening.

Is that how a waste spark system works ? I always thought it just means that the plug fires twice as often.


How can the spark jump backwards? Waste spark is the plugs firing on compression and exhaust stroke. I thought ruthenium was a joke............Guess I ought to check out the spark plug section more.


"None of us are getting out here alive.....drink that beer.....eat that pizza......drive that Hot Rod"
"When others cut you down, remember where they came from."
"I don't run...........I just wait"
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087681 04/26/19 08:06 PM
Joined: Apr 2004
Posts: 8,392
P
pbm Offline
Offline
P
Joined: Apr 2004
Posts: 8,392
If I had that choice I'd choose the 'Rutheniums'......I dated a girl named Ruth once.....J/K....I like the fact that the precious metal is on both tips and I trust NGK....

PS: Popsy....your pictures are awesome....my (old) eyes can't see my plug tips as clearly as your great pictures show them....Thanks.


'Journalism is Dead'
Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087713 04/26/19 08:37 PM
Joined: Jan 2018
Posts: 1,196
D
das_peikko Offline
Offline
D
Joined: Jan 2018
Posts: 1,196
I'm going with NGK double platinum next time. The Iridium plugs have always looked too delicate.

Re: Iridium vs Ruthenium spark plugs [Re: Popsy] #5087801 04/26/19 10:29 PM
Joined: Dec 2013
Posts: 4,124
C
clinebarger Offline
Offline
C
Joined: Dec 2013
Posts: 4,124
Originally Posted by oldhp
Originally Posted by rubberchicken
Originally Posted by WobblyElvis
The dual tip is not necessary for most applications. In a waste spark system the spark jumps the opposite way on every second plug, that why the special tip is needed on those plugs. Over time the spark tends to carry some of the base metal from the plug with it eroding the electrode. These fancy metals prevent that from happening.

Is that how a waste spark system works ? I always thought it just means that the plug fires twice as often.


How can the spark jump backwards? Waste spark is the plugs firing on compression and exhaust stroke. I thought ruthenium was a joke............Guess I ought to check out the spark plug section more.


[Linked Image]


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Page 1 of 5 1 2 5
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™