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For sure tell us how these plugs are. I’ve been trying to get my buddy to buy some for his Miata to try them out becuse he only needs 4 and I need 8. but he hasnt yet. I have seen people on the Lexus forum speak highly of them
Never even heard of these before. What's so special about them?
So is that better for the consumer--us? Performance or even better mileage wise?
Fancy materials and supposed to last longer and me moar fasterer.
Probably not. But maybe? Probably more ‘noticable’ in a higher compression engine. Nothing wrong with double platinums imho
How bad you want to know? At some point i’m gonna get the tahoe on the dyno with my tuner guy. Buy the plugs and mail them to me and i’ll do before/after pulls and then mail them back to you lmao
I’m gonna try those on The Beast. Gotta find them in a colder heat range though because blower. I’m tired of changing the cheap copper NGK’s every few months.
I run the TR6 copper plugs. They aren’t listed for my engine either- heat range is too cold. TR5 is called for. Whippple calls for a TR7 but I found it was running rough and Blackbear said that plug is too cold, use a TR6. Then for iridium the suffix is IX and ruthenium have the AHX suffix. So I ordered the TR6AHX or 92714 is the cross reference number. If you look up the application for my 2002 6.0, NGK calls for the TR5AHX or TR5IX. I’m just ordering one heat range colder.
Well said
I doubt anybody will feel any difference between copper, platinum, double platinum, iridium or any other plug when first installed. Longevity is supposedly what the difference is. When platinum plugs came out, they were advertised to last longer than copper ones. Same with iridium. In my experience this is true, at least as far as going from copper to iridium. I never used platinums. And now they say the ruthenium will last longer than any other. And the amount of any of these rare metals is so tiny that it doesn’t account for any difference in manufacturing cost since it’s only the center electrode that’s a ruthenium alloy ( so even this tiny part isn’t pure ruthenium) imo. So now they say these ruthenium plugs last longer that the iridiums and they supposedly have the tests to prove it. They’re about the same price so imo, why not? Did you feel the same when they came out with iridium plugs, that they’re more expensive so you didn’t want to try them since platinum worked fine? BTW I was running the old copper plugs for quite awhile in order to make sure I didn’t need to change heat ranges again and at $2.50 per plug they were cheap to experiment on. But now I know the heat range is correct I’m buying the best plugs they make. The last set lasted me less than 15,000 miles and they’re done. It runs fine once it’s warmed up but cold starts I need to hit the gas a bit in order to keep it running. I’ve never had iridiums last more that 30-40k in my trucks before they start to show signs of being worn. So I’m hoping to get 50k out of this new design. 100k on a set of plugs? Not in my experience but I’m not running the newest generation of engines either and my DD is supercharged as you know and combined with the way I drive, it’s ******* everything.
The 5.7 hemi in my grandads ram had 200,000 miles on it when he replaced it with a crate motor and supercharged it. I think those had platinums from the factory, and he never once changed the plugs
Well maybe it’s just me but I notice a difference in how smooth they run waaaay sooner than that lol. Plus I’m of the belief that I want to replace plugs sooner that later especially in aluminum heads so they don’t end up seized in there. But if you want to leave your plugs in for 100-200k, that’s totally your call. These engines tend to run a bit rough at idle anyway so maybe it’s my imagination but mine have sure seemed smoother at idle after a fresh set of plugs, and they’re not an expensive maintenance item.
