Platinum v.s. Iridium

[TwinTurbo]

@B.L.E

Why not tungsten?, it’s harder, has a higher melting point, and is way cheaper than iridium, which is one of the rarest metals on earth.

It’s not pure Iridium, it’s a sintered alloy. I pointed out some of the benefits previously here- Iridium sparkplugs? - #17 by circuitsmith

Here’s a good summary if interested- DENSO SPARK PLUG