Stock b18b1 with I/H/E.
Decided to pull my plugs today and change em
Anyone know if this is normal or lean?
Didn't do any wot today when I drove it
Just partial and light throttle

 

A grayish brown is good, those look all gray, or is that white?

What kind of gas do you use and are there any additives? 94

 

seems fine, maybe a little old but nothing to worry about

 

Grayish can't really tell. But I'm using Mobil 87 octane.

 

they don't look too bad but you usually want the ceramic to be whiter

 

Is 87 octane the best you can get, find some 92/94 octane and put in a 1/4 tank when near empty and take car for a blast on a freeway, no need to speed, just run it for 10-20 miles then pull plugs and inspect. 94

 

We only got 91 here in our area. And our speed limit here is 40 mph max.
My afr is 13.8-14.4 cruising.
So I'm kind of richer then stoich.