2006年11月20日 · Laser has iridium center electrode with small platinum disc welded to the ground electrode. A Mazda TSB from 2012 indicates that this type of plug is required for Skyactiv engines even though NGK's site offers more that one type for those engines.

2010年4月27日 · The TT series is the aftermarket adaption of the Super-Ignition Plug Denso created for the Toyota D4-S engines, minus the side electrodes. I’ve used the Platinum TTs in a Subaru, haven’t tried the Iridium TT. Denso seems to push them more than Iridium Power. iridium TTs have platinum on the ground electrode, like the OE plugs.

2011年2月15日 · The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm …

2006年3月19日 · What optical differences distinguish Iridium shields? Do the different colors have the same effects as color tints in my prescription lenses? What advantages and disadvantages exist between these Iridium visors and more common smoke visors? If you want to talk specifics, I'm shopping AGV K6 helmets and one option includes a free Iridium visor.

2012年10月8日 · The manual calls for Denso Iridium Long Life plugs to be changed at 160k km. Cars at 320k so second swap and I noticed Denso has new TT plugs with smaller 0.4mm center electrode as opposed to 0.7mm in long life. Previously 0.4mm center electrode is for the "performance" plugs and generally doesn't last as long.

2016年4月6日 · From what I remember the older 0.4mm iridium plugs last about 15-30k miles, but the newer 0.4mm Denso Iridium TT claims 100k miles life vs the 80-100k miles life the 0.7mm Long Life Iridium. They are also cheaper too.

2015年5月10日 · 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 …

2018年7月15日 · What would be a reasonable Iridium Plug change interval? I have Denso Iridium Power II's, which Denso rated for 30k miles back in 2014 or so when I put them in. I rechecked and now Denso Europe gives them just 20k miles. I heard a lot of people claim 60-70k miles on them are no problem. Now the...

2005年2月14日 · Platinum and iridium will last a long time. But iridium is better because it conducts better than platinum. Actually, plain steel plugs [when brand new and sharp] have less resistance at the tips than platinum. The new precious metal tipped plugs have a benefit in that they are quite small, and let gas in and out of the critical area better.

2015年2月10日 · NGK Laser Iridium ILZFR6C-11K; Bosch Double-Iridium 0 242 240 715; They are going to get installed in a Mitsubishi Lancer 4A91 engine that has been converted to LPG. The price of the Bosch ones is about $9.30 per plug and NGKs are priced at $15 per plug. Is there really any difference in their quality regarding their performance or their lifespan?