Spark plugs for the Kizashi
Your right. I have only used NGK's for the last decade. But I guess I can be bought. I went back to Meijer's and loaded up with Autolite Iridium's for my other vehicles my chainsaws, ATV, tractor, lawnmower and generators. The non-car plugs where just $1.49 for Iridium's! Or should I say "Almost Iridium's". For 16 of the car plugs Autolite is rebating $2.50 a plug. I got two set's for the Kizashi and a set for another two cars. Since they cost about $3 each the end cost is .50 cents. A $40 rebate! If these plugs last 100,000 miles with the two extra sets the Kizashi should be plugged up for 300,000 miles. I know Iridium's are overkill for chainsaws etc but for $1.49 why not?bootymac wrote:The Autolite XP are iridium "enhanced" and not true iridium plugs but at that price, who cares!
64 Galaxie 68 Olds 442 65 Impala 70 VW Bug
74 Nissan B210 66 Chevelle 73 Olds 98 71 C20
75 Monza 82 Escort 75 E150 75 Civic 76 Accord
86 Escort 87 Taurus 83 Chevy G20 85 Ranger 4x4
93 F250 4x4 95 Silhouette 95 LHS 03 Corolla 10 Kizashi S MT
17 Sienna
74 Nissan B210 66 Chevelle 73 Olds 98 71 C20
75 Monza 82 Escort 75 E150 75 Civic 76 Accord
86 Escort 87 Taurus 83 Chevy G20 85 Ranger 4x4
93 F250 4x4 95 Silhouette 95 LHS 03 Corolla 10 Kizashi S MT
17 Sienna
Wow, I've never seen iridiums for small engines like lawn mowers and chainsaws. Didn't know they existed until now.
The Autolite Iridium XPs look like they have the very tip of the center electrode coated with iridium. Other more expensive iridium plugs have the entire tip made of iridium.
That being said, the metal inside most of the plug inside the ceramic is copper. It's the tip that defines the type of plug.
The Autolite Iridium XPs look like they have the very tip of the center electrode coated with iridium. Other more expensive iridium plugs have the entire tip made of iridium.
That being said, the metal inside most of the plug inside the ceramic is copper. It's the tip that defines the type of plug.
2011 Suzuki Kizashi Sport GTS 6MT (Black)
I just checked the factory plugs on my Kizashi and they're NGK Laser Iridium SILFR6A11 (#5468). These are copper core plugs with an iridium center electrode and platinum ground. NGK specs the following plugs as well:
- G-Power Platinum LFR6CGP (#1483)
- Iridium IX LFR6AIX-11 (#6619)
Interestingly, the factory gap was 0.040" while replacement plugs are pre-gapped to 0.044".
- G-Power Platinum LFR6CGP (#1483)
- Iridium IX LFR6AIX-11 (#6619)
Interestingly, the factory gap was 0.040" while replacement plugs are pre-gapped to 0.044".
A bit more on the iridium plugs. NGK claims the performance between the Iridium IX and Laser Iridium is the same. The difference is in lifespan; Iridium IX last 40-50k miles while Laser Iridium will last 80-100k miles. Laser Iridium will be cheaper over the useful life of the plug.
https://www.google.ca/url?sa=t&source=w ... W6JWmZr_4g
http://www.ngk.com/learning-center/arti ... plugs-last
https://www.google.ca/url?sa=t&source=w ... W6JWmZr_4g
http://www.ngk.com/learning-center/arti ... plugs-last
Back on page 2:
murcod wrote: http://www.ngksparkplugs.com/pdf/DYK_La ... m%20IX.pdf
Iridium IX are rated at only 40 to 50 thousand miles, Laser Iridium are 80 to 100 thousand miles. There's not a huge price difference between the two, but the Laser has twice the life.
The Laser Iridium is also listed as being the OE spec part.
PS: On Rockauto you're looking at US$6.83 ea (Iridium IX) vs US$9.73 ea (Laser Iridium)
David
The Iridium IX plugs are marketed as the enthusiast plugs while the Laser Iridium are more OE plugs from the advertisements I've seen. I think the point of the IX is to be cheaper but also intended for folks like gearheads, tuners, and enthusiasts who work on their own cars. I think the assumption is that most enthusiasts would rather change plugs more frequently to maintain optimum performance than have a more expensive plug in there for longer, which inevitably suffers from performance degradation over time.
I've used IXs in my Impreza, Mazda3, and Legacy and always liked them. However, I would agree that they need to be replaced around 45K miles. (I've wrote earlier in the thread that they were rated to 75K, but I was mistaken and confused the mileage ratings with other plugs.) I replaced my IXs in my Mazda after about 47K miles in preparation for selling it. The replacement IXs restored noticeable performance.
So I guess which kind of plug is best to use depends on you. If you'd like to not worry about them for a while and/or don't work on your own car, it makes sense to buy the more expensive Laser Iridiums and leave them in there for longer.
If you like to maintain optimal performance and don't mind working on cars, then the Iridium IXs may be a better choice given they are cheaper, but have a shorter lifespan. Having a shorter lifespan means they need to be replaced more frequently which goes to maintain optimal performance. I think it's safe to assume a brand new IX plug performs better than a Laser Iridium with 50K miles.
I've used IXs in my Impreza, Mazda3, and Legacy and always liked them. However, I would agree that they need to be replaced around 45K miles. (I've wrote earlier in the thread that they were rated to 75K, but I was mistaken and confused the mileage ratings with other plugs.) I replaced my IXs in my Mazda after about 47K miles in preparation for selling it. The replacement IXs restored noticeable performance.
So I guess which kind of plug is best to use depends on you. If you'd like to not worry about them for a while and/or don't work on your own car, it makes sense to buy the more expensive Laser Iridiums and leave them in there for longer.
If you like to maintain optimal performance and don't mind working on cars, then the Iridium IXs may be a better choice given they are cheaper, but have a shorter lifespan. Having a shorter lifespan means they need to be replaced more frequently which goes to maintain optimal performance. I think it's safe to assume a brand new IX plug performs better than a Laser Iridium with 50K miles.
2011 Suzuki Kizashi Sport GTS 6MT (Black)
The IX have a 0.6 mm center electrode.bootymac wrote:Apparently the IX plugs also have a thinner center electrode for better performance at the cost of shorter life. I can't find anything that confirms this though
http://www.ngksparkplugs.com/products/s ... p?mode=nml
I can't find stats on the Laser Iridium, but my guess is either the same 0.6 mm or possibly 0.7 mm.
2011 Suzuki Kizashi Sport GTS 6MT (Black)