Curious to know what people think of my plugs. They don't look as good as the set they replaced 15000km ago. The last set had a nice even colouring. I think I might be getting or at some point have had some inaudible detonation. The plugs have come out slightly creamier in pics than in real life. Where you can see the ceramic it's actually alot whiter.
The plugs 1, 2, 4 and 6 have a white streak about 3mm wide down the side of the nose insulator, the plugs 2, 5 and 6 have a green tinge on the electrode. Plugs are unmodified BCPR6ES-11