Does anyone know what brand of spark plugs were used for 2006 Lexus LX 470 at the Toyota plant - Denso or NGK? I do not know if the spark plugs were ever replaced on my vehicle and when I removed one of them it was NGK brand. It says "Japan" on the round metal part.
Can one tell if this is the original spark plug for 276,000 km or 171,500 miles? They are good for 192,000 km according to the maintenance schedule. As I could tell based on carbon deposits and sludge on the threads they might be installed some years ago.
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