Has anyone DIY'd spark plug replacement?

[6of36]

Could have been. There are a lot on YouTube if you look for fake nkg. I did not know it was so prevalent until you brought it up though.

I just randomly ran across it, and it caught my eye. I wouldn't think they would go to the expense to counterfeit something as cheap as spark plugs, but I guess everything can be made for pennies on the dollar in China.

 

[OCD Solutions]

At $13-$15 a piece, plugs aren't so cheap anymore.

 

[OCD Solutions]

Work has me back on the road so I'm currently logging 156 miles a day with my commute. I'll run a couple more tanks before I comment on any other noticed improvements like mileage but I have noticed that the truck is idling so smooth again that at times it seems like it's not even running and I have to look down at the Tach.