Thanks to this forum and the awesome GX Spark Plug DIY tutorial, I was able to successfully change out spark plugs on the wives GX. It idles noticeable smoother now!!
I ordered Champion Iridium plugs from RockAuto, gapped them, and installed them. Like I said, it idles so much smoother now, but I am wondering if I went with the wrong plug. After reading more, it looks like I should have purchased Denso or NGK; NGK were what I pulled out BTW.
So I have a question, if you were me, would you remove the Champion's and replace with Deno or NGK? Or change them at some interval in the future? Or go the full 120K service interval?
It does not get heavy use, around town driving for about 10-12K per year. No towing or laborious work.
Also, if it makes a difference, I neglected to apply anti-seize to the plug when installing. Am I looking at problems down the road when I (or the new owner) try to remove them?
Thanks in advance for your comments. What a great resource this is, especially if I were to read more ahead of doing the job
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That's why I said "I personally", meaning if it were my GX.
The OP can do as they wish but I would never put anything Champion on or in my Toyota / Lexus especially an engine.
i agree with you...but seeings how they are in already...probably doesnt make a difference...we wouldnt do it for the same reason we spend time reading and posting on this forum....becasue we are OC and everything has to be perfect...gets a little stressful sometimes..ya think?LOL
This is second-hand information, but I believe it to be reliable.
Both Lexus and the spark plug manufacturers recommend against using anti-seize on your spark plugs.
You might want to do a bit of research to confirm.