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I would use a standard copper plug from either Motorcraft or Autolite. Auotlite makes Motorcraft plugs.
Copper plugs burn hotter than platinum plugs. Hotter spark means more fuel is burned hence better power and better MPG.
Copper is a better conductor of electricity than plantinum. Platinum plugs will last longer becuase platinum is harder than copper..........
So I'm getting ready to swap plugs in my engine in my 05 and it looks like I only have two choices because of the 3V 5.4L engine (VIN 5)...
Motorcraft SP-462
or
Autolite HT1/HT15
What gives? I thought maybe I would have a Bosch or NGK option as well
I think Champion also makes plugs for the 3V. It's because of the 2 piece design that I guess it's only offered by those companies. Also because of the two piece design that you get broken plugs...