They've been changed at least once as originals would be FoMoCo
The ones above don't appear to have the very fine Iridium tip ??
No, just standard. I bought some platinum iridium hybrid one s off ebay, so maybe I'll see a difference when I next go for a spin. Checking my file, the one but last service before I bought it just cleaned them up. The service schedule for the engine recommends replacing after 60k miles, but from what I've read, quality plugs improve performance, fuel economy and emissions, so for the cost of a new set of decent plugs, it would make sense just to replace them rather than just giving them a clean.
