And I see a difference in my # 1 Exhaust valve. As you can tell the #1 exhaust valve has changed....

the color has gotten darker, especially around the 1:00 o'clock position and possibly 8:00. All the rest of the valves look the same as they did a year ago.
So the question for the engine Guru's, should I be concerned about this?
This pic is from last years inspection.
Sorry for Hi Jacking your post Turbo, but this seemed like a good place to post this.
Regards,