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Iridium spark plugs

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Old Sep 29, 2016 | 08:39 PM
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Default Iridium spark plugs

Time for 60K miles maintenance service. 2 big item. One is flushing braking fluid(I can do it in Toyota for USD100.00). The other is replacing Iridium spark plugs for USD330.00.

start and acceleration of my 2011 LS460 are still good. Is it worth to replace the 8 iridium spark plugs? Will it make my driving even better?
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Old Sep 29, 2016 | 09:02 PM
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yes to the break fluid, no to the plugs
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Old Sep 29, 2016 | 10:23 PM
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Originally Posted by 2v1g
Time for 60K miles maintenance service. 2 big item. One is flushing braking fluid(I can do it in Toyota for USD100.00). The other is replacing Iridium spark plugs for USD330.00.

start and acceleration of my 2011 LS460 are still good. Is it worth to replace the 8 iridium spark plugs? Will it make my driving even better?
Pay for the brake flush but buy the plugs and DIY
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Old Sep 30, 2016 | 06:18 AM
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How to DIY for 8 plugs?
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Old Sep 30, 2016 | 06:39 AM
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Originally Posted by 2v1g
How to DIY for 8 plugs?
Here's my DIY I posted a couple of years ago....:

https://www.clublexus.com/forums/ls-...eplacment.html

If you have any questions let me know. As for the brake fluid......did you check other dealers? I only pay 79 bucks at my Toyota dealer, and that's in Canada which is usually more expensive than the US.
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Old Sep 30, 2016 | 08:31 AM
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Originally Posted by 2v1g
How to DIY for 8 plugs?
Make sure you source some good plugs: See your owners manual or http://densoautoparts.com/find-my-pa...icle-selection
I went with the Denso TT plug because it's the latest technology. You can change your plugs 3 time for what the dealer charges smh. The hardest part is putting those engine room covers back in. Make sure you have a long needle nose pliers; preferably with a bend, to easily extract the coil seals from the valve covers. If it takes you 2 hours it's because you ate lunch while you did it.

Last edited by superdenso; Oct 1, 2016 at 09:43 AM.
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Old Sep 30, 2016 | 08:34 AM
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roadfrog, Thanks for your DIY post
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Old Sep 30, 2016 | 09:31 AM
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Originally Posted by 2v1g
roadfrog, Thanks for your DIY post
You're welcome. And no matter what anyone else tells you...DO NOT use anything but Denso plugs. Not sure if I mentioned that in the DIY or not. Here's the best deal I could find, which is about 80 bucks for all 8 (2 pkgs of 4 @ $40 per pack), and free shipping. http://www.ebay.com/itm/4-X-DENSO-IR...1WAtle&vxp=mtr

Last edited by roadfrog; Sep 30, 2016 at 09:48 AM.
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Old Sep 30, 2016 | 09:39 AM
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Originally Posted by roadfrog
You're welcome. And no matter what anyone else tells you...DO NOT use anything but Denso plugs. Not sure if I mentioned that in the DIY or not.
Chris, FYI- I sent you a PM...
Thanks BUD!
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Old Sep 30, 2016 | 03:00 PM
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Sparkplug Part Numbers
Denso OEM plug: FK20HBR11
Denso TT plug (*): IKBH20TT
NGK plug: DFH6B-11A

*I won't tell what my experience is on this one. Not interested in an in depth sparky discussion today

Last edited by superdenso; Oct 1, 2016 at 09:51 AM.
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Old Sep 30, 2016 | 06:50 PM
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Originally Posted by superdenso
Make sure you source some good plugs: See your owners manual or http://densoautoparts.com/find-my-pa...icle-selection
I went with the TT plug because it's the latest technology. You can change your plugs 6 time for what the dealer charges smh. The hardest part is putting those engine room covers back in. Make sure you have a long needle nose pliers; preferably with a bend, to easily extract the coil seals from the valve covers. If it takes you 2 hours it's because you ate lunch while you did it.
If it takes you 2 hours it's because you ate lunch while you did it? I checked with mechanic shop today. They said it will take 1.8 hours to change V8 spark plugs according to the books.
So congratulate Roadfrog, you are almost a naturally born mechanic.
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Old Sep 30, 2016 | 06:52 PM
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Change my 2 leaking rear struts is 4 hrs job
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Old Sep 30, 2016 | 07:28 PM
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Originally Posted by 2v1g
If it takes you 2 hours it's because you ate lunch while you did it? I checked with mechanic shop today. They said it will take 1.8 hours to change V8 spark plugs according to the books.
So congratulate Roadfrog, you are almost a naturally born mechanic.
I tried. LOL. Maybe the next time I do it, it'll be 1.8....and I'll skip the lunch
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Old Sep 30, 2016 | 08:31 PM
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Originally Posted by roadfrog
You're welcome. And no matter what anyone else tells you...DO NOT use anything but Denso plugs. Not sure if I mentioned that in the DIY or not. Here's the best deal I could find, which is about 80 bucks for all 8 (2 pkgs of 4 @ $40 per pack), and free shipping. http://www.ebay.com/itm/4-X-DENSO-IR...1WAtle&vxp=mtr
Thanks rearfrog, I just bought 2 of them. I don't have the tools you mentioned and I will ask Lexus how much is the labour if I provide the spark plugs. Toyota dealer seems to quote me more money for parts and labour for this job.
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Old May 8, 2018 | 04:51 AM
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I am at the cusp of 60K for my 2011 LS so I revived this thread.

My 60K list includes:
Spark Plugs, Denso 3473 or 4705
Brake Fluid flush & fill
Engine Air Filters X 2
Cabin Air Filter
Front Brake Rotors



Last edited by damon; May 8, 2018 at 06:29 PM.
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