What's the difference? The NGK site does not say much. The IX has a thinner tip. So I suppose it fires better under lower voltage but wears out quicker than the standard Iridium?
NGK Iridium vs Iridium IX
- Thread starter Jonny Z
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Iridium IX all that's available here. I have them in both vehicles.
quote:I believe this is exactly true. The IX is for replacing standard (easy to change plugs) with Iridium plugs. The NGK Iridium is made more for long life (60k miles).
So I suppose it fires better under lower voltage but wears out quicker than the standard Iridium?
Ive had both, from what I recall one of them had a larger center electrode, but I dont remember exactly which.
I havent used ngk but i got denso's in my 3.4L tacoma with no noticeable increase in gas milage.
its the heat range thats important and of course ngk will tell you its ok...use what came with your vehicle
I put no faith into gimmick plugs.
Comparing new double plats to new Iridiums to new coppers I doubt anyone would ever be able to measure a difference in the real world.
Most people install fancy smancy new $12 each plugs and say, "Wow, my mileage went up 3 mpg!" Of course, they're comparing new plugs to ones that 100k miles old and completely worn out.
I use cheap coppers in my aspire because it takes 4 seconds to change them. I use double plats in my V8s so I don't have to change them as often because #4 and #8 are a PITA.
FYI, coppers provide all the "performance" of iridiums at a much lesser cost (and life).
NGK Standard Iridium vs. IX Iridium spark plugs?
I'm not aware of the NGK standard Iridium plugs... may be the Double Platinum or the GP Platinum.
I'm currently using the NGK TR55IX's in my 01' Silverado that NAPA Auto Parts had on sale earlier this year without any problems. These are the Iridium version of the NGK Double Platinum's that are OEM from the factory.
A friend of mind is using the NGK TR55 V-power spark plug in his 01' Corvette. He claims to have better low-end with them.
Bowser
I have used the IXs in a motorcycle (Honda ST1100). Compared to newish standard NGKs, no noticeable chnage in any respect. They may be better in the longer run as they should not deteriorate as quickly, but the bike is relatively easy on standard plugs which laste ages anyway. I put them in as the two back plugs are a pain to get to, so I want to set and forget.
Denso iridium all the way!
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