Originally posted by ZeroHour:
double platium is the way to go.
They are "double" platium as in two layers of platium. It is to make them last longer . . .
Double platinum means that there is a platinum disc on both the center wire and side wire. Double platinum is essentual on your type of ignition system. The platinum tip is needed on the firing tip. Half of the cylinders fire the plugs in the conventional manner from the center wire to the side wire, and half the opposite from the side wire to the center wire. The original factory plugs had two different pat numbers, both single platinum, one part number with the center wire platinum disc and the other part number with the platinum disc on the side wire. To make the replacement plug "idiot proof" so that you could not accidently install the wrong plug in the wrong hole, they use a platinum disc on both the side wire and the center wire.
Jim Johnson
98 SVT
03 Escape Limited
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