So back when I had my 2012 3.5 EB I swapped the plugs every 30k.

I am at 29k in my 2016 3.5 EB. I assume it is still recommended among folks to do so?

If so, what plugs and gap? Same as previous

Thanks

 

2018 3.5 EB manual says every 100k miles. I wouldn't go that long but surely not every 30k (my $.02).

 

I do 30k but I am tuned.

 

I did mine at 30K ('16 3.5 Eco, all stock) and there was a visible crater that was fairly deep. For $60 and about 30 minutes not a bad insurance policy in my opinion. They probably could have gone longer but I figured why not.

 

Thanks

What plug and gap?

I am all stock as well

 

I got the SP-580, honestly forgot the exact gap I did but probably around the .30 area.

 

That was the same in my 2012.

Guess things didn't change much. Guess that is good