@Oro - If you don't believe me or don't get it, I don't have time to try to convince you, sorry.

Let me know when Toyota/Lexus starts installing Ruthenium spark plugs in vehicles!

 

No, what you don’t have time to do is educate yourself on the matter. All you need to review is linked here.

Don’t try to hide - please be specific about why some of the best applied materials scientists in Japan are entirely wrong, and you have insight they do not.

This forum has a real problem with technical ignorance, and letting bad information float around and go uncorrected serves no one well. I’m a science/facts/evidence kind of person, so I don’t mind helping the other members of the forum wade through and discard the bad information out there. It’s a disservice to the community to not try to engage in technical discussions honestly and transparently.

 

@Oro - Ruthenium spark plugs have been available for over six years, since late 2018. Not a single carmaker has chosen to install Ruthenium spark plugs as original equipment. That is incontestable!

If Ruthenium spark plugs are so advanced and equally as long-lasting (or longer lasting) compared to Iridium spark plugs, please explain why in six years no carmaker is installing them as original equipment in their vehicles... We'll be waiting. Take your time!

 

“ I don’t want to admit to the obvious facts so I will create a red herring.”

e.g. - “Everyone says V12 engines are smoother, so why hasn’t Lexus installed V12 engines in all cars? Thus I have proven V12 engines are in fact NOT smooth.”

Address the question, not throw out red herrings, please. Not all of us here failed rhetoric or logic, you know.

 

The NGK Ruthenium spark plugs have been known to cause problems in Toyota/Lexus and others, with check engine lights not long after installed. The NGK LASER Iridium and normal Iridium are much better plugs.

 

I’d recommend OEM. I don’t see upgrading the spark plugs all of a sudden unlocking some crazy potential in the motor. From what I’ve seen, full bolt ons and a tune really doesn’t get you much over stock anyway. Moneys better spent on suspension stuff or cosmetics

 

They aren't going to, not on a naturally aspirated motor. I do run them on a modified VW and it's great, but that a whole different ***** of wax, Our v6 NA motors aren't pushed hard and iridium's already last 100k+. There is nothing to fix.

 

Just a FYI: If what you have seen makes you think that the 2GR bolt on's don't get you much that's totally False. A little search would give you and others, some far better info about that and, get that Narrative from being spread over and over . The Full Bolt on's and Tune can add as much as 50hp - 60hp + and more Tq to our engines. Tuners like Tune by LOI and D3 Performance have it backed up by Dyno runs before and after. Mostly the IS350 crowd has the Mods and there are one or two IS350's here on CL who have those results also backed up by as fast as 4.3sec 0-60mph times. The GS350 same engine is getting the same hp increase results.

The Suspension Mods on the street if you are not going to Track the car or do some twisty's in the Mountains, are a waste of time IMO, and will escalate wear of other Stock Suspension parts very fast. Also included it the soup pot luck, too many different aftermarket suspension parts resulting is the Factory Steering Rack dangerous out of beyond Steering ECU calibrations. The cosmetic looks fast GS350 car that still only makes 260hp on the Dyno is the car to me. lol! But to each his own.

 

why are you just now telling me this? i already ordered a carbon fiber hood, fenders, gas cap, wing, lip kit, and i threw racks on an entire Etsy store worth of automotive decals? you should have told me sooner, i cant return this stuff dude...

 

Someone reading this thread PM'd me the link to the video below.

NGK Tech Support admitted to comparing the Ruthenium spark plug to their own lower end NGK Iridium IX spark plug (chart is provided in the video to support this fact).

NGK tech Support also admitted that the Ruthenium spark plug does not last as long as their higher end Iridium spark plug.

Therefore, it stands to reason the NGK Ruthenium spark plug would definitely not last as long as the high end original equipment Iridium spark plugs installed by carmakers.

[End of convo...]

 

MODERATOR EDIT. Oro exit this thread. Need to stop the rude personal comments

 

2014 GS350 F-Sport coming up on 60k maintenance.

I was looking at spark plugs on lexuspartsnow.com and they only sell the original part number in sets of 10.
In the notes for 90919-01249, it shows an alternate part number of FK20HBR11.
90919-01249 - Lexus Parts Now

While looking on RockAuto, I found the Dezno 3473 which also have an alternate part number of FK20HBR11.
Can someone confirm if the Denso ones on RockAuto are the correct part number for a direct factory replacement?
More Information for DENSO 3473

 

That looks to be the same, I just did this job on my 2013 GS yesterday, and I actually got 6 of the FK20HBR11 plugs from my local Toyota for $76 total. You might want to shop around the local Toyota dealers to see if you can get them for cheaper. Alternatively you can order them from a Lexus dealer online, Bell Lexus of Scottsdale tends to have great prices

 

still pricing out the last few items I need for my 60k service. Between free shipping and saving a penny here and there, Bell Lexus is $30 cheaper that what I previously planned. Thanks for the recommendation.