Holy life of Spark Plugs

By no means do I think anyone should set out to do this intentionally. I bought the truck 2 years ago and just got around to replacing the spark plugs. The truck ran fine before and I would say even had decent gas mileage from every thing I have read on here. At its current state the truck has 180700ish miles on it. I am almost certain that the plugs I pulled out last night were the factory originals. Passenger side was Denso and driver side was NGK as I have heard and read on hear a lot. That and I don't know why anyone would go to the store and buy 3 of one brand and 3 of another on their own. I wish I could have taken pictures to post but my wife was "helping" as I was working and threw them away with other garbage and I didn't feel like going through the trash. Over all wear was not to bad considering. (I have defiantly seen worse with fewer miles on them).
Am I wrong in thinking these are the originals? This seems overly impressive from a copper cored spark plug.

 

Yep, likely originals given the difference in spark plug brands. That's how they roll from the factory. Most, like myself, stick with all densos when replacing for the first time.

 

Unless someone put them back to half ngk and denso like it came from the factory they were original.
When I bought the Denso plugs for mine on the reciept it says nickel plug not copper.

 

Not to HyJack the thread, but is there a reason Toyota would use 2 mfr’s on the same engine from the factory?
Has to be some kind of political decision to pacify vendors?

 

Yes, the theory is toyota was throwing a bone to 2 different suppliers

 

You are right it will say Nickle but for the core it is just a nickle finish over top of the copper.

 

great trucks. even with neglect they keep on truckin.....lol

see what i did there?