08 GT black coils. Which one piece spark plug are you guys using and getting good results? Autolite? #?

 

I run $1.98 Motorcraft copper-tops. Why mess with what works?

 

Do you have a plug number, because there is not a plug cheaper than $8 for a 4.6 3v that I could find. And you say it as though that $1.98 plug came with the car. Please explain

 

If you have the 2 piece plug as I do in my '06 GT, and you are asking which 1 piece plug I use it is the Champion double platinum, I have been running them for like 80,000 miles (I'm on my 2nd set) with great success. Easy starting, smooth idle, great power and mileage. and the biggest plus of all, when I do remove them - they will come out in 1 piece.

 

...this is the v6 section... very different plug options!
The last set of autolites I bought was from rockauto for around $1 per plug.

For any f/i application, NGK TR6 plugs are great (and what I use now on the v6).

 

Sorry...
I am speaking about the V6 plugs.
Silly me.

 

I also run Champions. Have had them in there since 07. No issues.

 

Brisk (PN 3VR14S).
One piece plugs gapped at 0.032