2006 Spark Plug
#1
Rookie
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2006 Spark Plug
2006 LS430 pulled the original plugs at 160,000 and they looked quite good, but probably should replace. Plugs were NGK IFR6A11, but I see they don't make them anymore. Any suggestions on correct replacement.
#4
Lead Lap
Spark plug replacement interval is 120,000 miles per the maintenance booklet. They might be considered lifetime if not for the emissions compliance requirement. My original spark plugs looked like new when replaced during the 120,000 mile service and the car didn't run any differently with the new plugs.
Maybe I'm odd but it never crosses my mind to not follow a car manufacturer's maintenance schedule.
Maybe I'm odd but it never crosses my mind to not follow a car manufacturer's maintenance schedule.
Last edited by Kansas; 07-28-12 at 02:58 PM.
#6
half
Hey, we each baby our cars in our own way, but changing iridium plugs every 50k is like eating 1/2 an apple and throwing it out, then moving to another apple. Just not necessary. . DIY at least makes it less expensive.
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