Checked spark plugs 2015 Mirage ES about 98700 miles

[ken2400]

Checked spark plugs 2015 Mirage ES about 98700 miles
Keep or replace?
I did do a little cleaning before taking the photos.

The outer two were tight and slow to remove.
The middle one seemed loose?

[BigMW]

Spark plugs are inexpensive. If I go through the effort of taking them out, I replace them, especially if they give me any trouble with removal

Yours look like they are burned, yet the threads look oily. I would definitely ditch those

[inuvik]

You are close enough to recommended mileage I'd replace them with a new set. Make sure to torque the new ones correctly using a torque meter and don't over torque them.

[ken2400]

Burn yes oily is the copper anti seize I put on on them.
Time to look for them. They are NGK somethings

[BigMW]

Burn yes oily is the copper anti seize I put on on them.
Time to look for them. They are NGK somethings

Back when I used to live in communism, we used to clean spark plugs like that, and then reuse them multiple times. Needless to say, our engines did not run well.

[Fummins]

Attachment 26294
A little over due at 300k km Attachment 26295

[ken2400]

Some more pictures.
From cyl to the left when facing car.

New OEM on order
From what I have read and the person at NAPA said I will not put anti seize on the new ones.

Going to find a torque wrench to put the news ones in at 20 lb. ft.
https://www.ngk.com/ngk-93298-lzfr5b...ium-spark-plug
Torque Specs Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

[ken2400]

Still thinking of trying
NGK 96355 LFR5AHX Ruthenium HX Plug
Anyone trying yet here?

[ken2400]

Plugs changed with OEM NGK 93298
Not much different in running.
Will keep an eye on MPG

[skyblueII]

This was mine at 100k km, looked pretty good, to an untrained eye.