I am totally aware that probably no Ork has died of natural causes unless you count a bolter round in the head as a natural cause. But just how old can Orks become? As there is probably no official answer to this, what is the oldest Ork that appears in the WH40k-Universe?
I was able to find Ghazghkull Mag Uruk Thraka which led the second and third WAAAAGH to Armageddon, which took place 941.M41 and 998.M41. According to the Wiki article on him, the first record about Ghazghkull Mag Uruk Thraka was 932.M41:
The first mention of Ghazghkull came some nine Terran years before the Second War for Armageddon in 932.M41.
From the Fandom Article on Ghazghkull Mag Uruk Thraka
So, he's at least 66 years old. Is there any Ork we know more of how old they've become? Or has it ever been stated how old Orks can become?