Spark Plugs: Platinum vs. Copper

[deweyville65]

Coil on plug is a newer system, with double number of coils compared with waste spark system.
And still no distributor and still they don't use copper tips anymore either. Don't need dual platinum, but fine-tip iridium (or platinum) - to lower the voltage stress on the coils that are now smaller then previous ones.

Thanks for the info