2016 Rogue SL spark plug change and throttle body cleaning

[nabril]

good morning to all

After reading 6 browser tags with different posts about spark plug-related threads, the time has come to change my wife's. She's near 80k miles and yes, I know that they are rated to last until 105k or so. I also know that there is a good possibility that when I remove the old ones, they look perfectly fine and clean and I may feel disappointed.
But, for a $60 - $80 relatively simple job of replacing them, why not, right? Or maybe I should wait to get closer to 90k miles?

These are the key points, and I ask for your corroboration:
THE PLUGS
Brand: Use iridium plugs by Denso, NGK, Autolite, or the brand I've seen as a child, Champion. Ruthenium??
Socket: Long 14mm or 9/16th with the rubber bushing = for spark plugs
Plug tip gap: do not calibrate or mess with

Two questions
1. Is it wise to clean the area around the coils with something BEFORE removing the coils? The area is bound to be dirty, so why not clean it a bit with something so that it doesn't fall into the plug hole?
2. Can the inside of the coil head be sprayed with something to clean it up? I read in one of the posts that someone mentioned using PB Blaster to clean the coils; I may have the product wrong and I can't find the thread that mentioned it.


THE CLEANING OF THE THROTLE BODY
This looks fairly simple and that it can be done without removing the piece. I read that I can spray the little door (whatever it's called) while someone accelerates at the same time.
Is that a correct statement?
Removing it is not a big deal, but then I will have to relearn the idle and something else.

Thank you as always,

[VStar650CL]

Plugs: Stick with the riceburner brands, Denso or NGK. Rutheniums are fine if you think the car might last you to 300K and you don't like changing them, otherwise I'd stick with iridium. I usually only recommend rutheniums to folks with hard-to-get-at plugs on their engine.

Coils: You can clean them with WD or PB, or anything else that's friendly to rubber. It's always a good idea to clear away debris.

TB: The throttle on some Nissans will work with key-on-engine-off, but not on others. If it does then having an assistant hold the butterfly open using the gas pedal is the best way. If it doesn't then the key is not to force the butterfly wide open when cleaning, that can damage the TB. Open it almost all the way. Use a toothbrush with carb or intake cleaner on the bottom edge and back side of the butterfly, plus the perimeter walls where the butterfly seats.

[nabril]

Plugs: Stick with the riceburner brands

TB: The throttle on some Nissans will work with key-on-engine-off, but not on others. If it does then having an assistant hold the butterfly open using the gas pedal is the best way. If it doesn't then the key is not to force the butterfly wide open when cleaning, that can damage the TB. Open it almost all the way. Use a toothbrush with carb or intake cleaner on the bottom edge and back side of the butterfly, plus the perimeter walls where the butterfly seats.

Thanks as always V.
Ha, "riceburner brands".
No, i will not get 300k from this car, so no rubenthiridium plugs.

The "butterfly" is the flap that opens and closes, right? I assume so.

So in accessory mode (engine off, start pressed), pressing on the gas pedal of my rogue MAY open and close the butterfly. If it does not, then I have to do it manually and carefully. Did I say that right?

[VStar650CL]

The "butterfly" is the flap that opens and closes, right? I assume so.

So in accessory mode (engine off, start pressed), pressing on the gas pedal of my rogue MAY open and close the butterfly. If it does not, then I have to do it manually and carefully. Did I say that right?

Correct.

[nabril]

Correct.

V
I just learned that PBlaster has a lot of different products - Silicone or Lithium grease, penetrating oil, Dry, Graphite Dry, etc.

Do I assume that the generic product, Penetrating oil, will be the one to use?

[VStar650CL]

Do I assume that the generic product, Penetrating oil, will be the one to use?

Also correct.