Stock 04' V6 Sparkplugs...

[morphious]

after almost 12yrs and 90,101 miles. And yes, 1,3,5 are Denso K20-HR-U11's and 2,4,6 are NGK R LFR6C's.

 

[fdbyrne]

That's what mine looked like when I replaced them at 125k. Not bad for a plug with a 30k replacement interval.

 

[morphious]

That's what mine looked like when I replaced them at 125k. Not bad for a plug with a 30k replacement interval.

I agree, interesting how the NGK's look more worn than the Denso's.

 

[fullboogie]

I agree, interesting how the NGK's look more worn than the Denso's.

How do they "look more worn"? There's no clear view of the relevant part of the porcelain or the center/side electrodes.

 

[strathcona]

How do they "look more worn"? There's no clear view of the relevant part of the porcelain or the center/side electrodes.

The electrodes in the first two pics look like the NKG's are a lot more worn than the Denso's.

 

[morphious]

[MENTION=107153]fullboogie[/MENTION]

NGK left, Denso right: