I was reading, no scientific data but on-line stuff, that the platinum plugs didn't create a problem because of the metal used, but because of the mass of metal being that the platinum is such a tiny electrode and that somehow makes it more vulnerable (especially in a reverse-polarity spark in a waste-spark system).

I haven't really looked that much into it, but since good copper plugs work, I've just stuck with that.

Other makes (such as various Audi forums) also tend to recommend not using platinum plugs so I don't really know the source. They have typically been a 60,000mile item for me so I don't work too hard at finding a better way. Oops, reminds me that the Ford just hit 60,000miles on its Bosch copper plugs, better order a set.

__________________

Gone to the dark side

- Jeff