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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

spark plug replacement @ 90k or 120k???

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Old 03-27-09, 11:48 PM
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ek9max
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Default spark plug replacement @ 90k or 120k???
I searched. I can't tell if i'm supposed to replace teh plugs @ 90k or 120k.

I'm at 88k now. Car runs smooth and good..... Should i wait? or pop in a new set of NGK irridiums now?
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Old 03-28-09, 12:02 AM
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its every 60k 2gs calls for Denso or Ngk last time i check, dunno about irdium
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Old 03-28-09, 01:03 AM
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I changed mines at 44k. car was still running nice and smooth but just wanted to changed them to see if any performace can be gain out of it..i was very pleased how well the car performs afterward.. i say change them NOW! NGK iridiumX
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Old 03-28-09, 10:22 AM
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ek9max
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2001 gs430 if that matter.....
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Old 03-28-09, 01:40 PM
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SoCal Cyco
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i heard 90.
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Old 03-28-09, 06:15 PM
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BCP43002
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You have till 120k per Lexus. See attached
Attached Files
File Type: pdf
2002 Maintenance Schedule.pdf (17.2 KB, 219 views)
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Old 03-28-09, 06:40 PM
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ek9max
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Originally Posted by BCP43002
You have till 120k per Lexus. See attached
oh! i guess i'll go return these then. haha.
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Old 03-28-09, 07:13 PM
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Denso Iridium is top priority
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Old 03-28-09, 09:57 PM
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ek9max
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Originally Posted by GS4_Fiend
Denso Iridium is top priority


I think NGK is better from what I hear. And now i hear tha ti don't have ot replace fro another 30k miles anyways.....
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Old 03-29-09, 06:32 AM
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burny
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Originally Posted by BCP43002
You have till 120k per Lexus. See attached

That attachment says the GS300 is at 60K. Look at second plug replacement line
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Old 03-29-09, 06:39 AM
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Denso or NGK? What comes in the car?
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Old 03-29-09, 08:27 AM
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BRADSGS4
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The plugs are 8yrs old. You should change them now. It may take you a while to hit 120k if you have a 01 with 90k on it.
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Old 03-29-09, 02:29 PM
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BCP43002
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Originally Posted by burny
That attachment says the GS300 is at 60K. Look at second plug replacement line
The OP siad he had a 2001 430 which is 120K. The 60K is for a IS300 I think.
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Old 03-29-09, 02:34 PM
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Originally Posted by BRADSGS4
The plugs are 8yrs old. You should change them now. It may take you a while to hit 120k if you have a 01 with 90k on it.
does age even matter? i thought it was just based on miles....
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Old 03-29-09, 02:44 PM
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BCP43002
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As the plugs get old they can get corroded at the threads making removal more difficult. Thats why when installing new ones you should coat the threads with antisieze.
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