Help! Read my plugs!

[Gabe]

Need help reading my spark plugs.

These are the Ford Racing "M50" zero heat range spark plugs, they were installed at about 24,000 miles when the blower got installed.
Car now has about 32,860 miles on it.

Pulled them today, replaced them with NGK 6510's

Engine runs smoother, but the oil on most of the plugs' threads worries me.

Is the oil normal on forced induction engines?

Engine doesn't burn any oil, oil was changed about 800 miles ago, oil level is the same as right after the change.

These plugs were removed after the car was driven about 15 minutes then it sat with the hood up for about 2 hours to cool off.

So is it condensation or oil or what?

And how do the plugs look?


Thanks in advance to all that will help.

And just because, an old and a new plug:

 

[travelers]

I answered your oily threads in your other post but your plugs look a little light in color. you may be running a little on the lean side. A tan color is more preferred.

 

[Gabe]

I answered your oily threads in your other post but your plugs look a little light in color. you may be running a little on the lean side. A tan color is more preferred.

Thanks, I saw your reply in the other thread.
The A/F ratio at WOT stays around 11:1, I think the leanest it gets is about 11.3:1, this according to the in-car A/F ratio gauge.

 

[weather man]

They look OK to me.

 

[Rob72]

I pulled the plugs on my N/A Coyote at 2000 miles and there was oil on the threads too.

 

[drive_55_not]

Thanks, I saw your reply in the other thread.
The A/F ratio at WOT stays around 11:1, I think the leanest it gets is about 11.3:1, this according to the in-car A/F ratio gauge.

Oily threads is normal, What fuel are you running cause it looks like you're running lean to me also.

#4 looks particularly rough.


.

 

[Gabe]

Good to hear the oil is normal.
The plugs looked kinda lean to me too ... I'm running pump 93 octane stuff, no additives, no octane boosters

 

[Tiddies]

I have oil on my threads when I checked them today. its normal.

 

[JeremyH]

Its normal if you run a closed pcv system otherwise its not.

I do see some signs of light detonation but overall the not bad.

 

[Tiddies]

Detonation is the specks on the strap right