So it was the PTO side the seized apparently and will be getting a new piston. The said the cylinder was fine.
I asked them what they thought happened and they said a cold seize. I asked them to explain their terminology and he said because it wasn't warmed up enough before you started.
I called BS on it and asked them to try again. I always warm up my sled before I move it, always have, always will. I drove 7 km before it abruptly seized. The max speed I was at while driving was around 60 kph so was not pshing it in any way shape or form at all. No snow dust to get sucked in to make steam in the cylinder either.
They are putting it through as warranty anyway and going back to check things further.
The sled has used around 7L of oil in 660 km and around 165L of fuel so if you do the math, it is getting plenty of oil through the oil pump by history.
My concern is there was a blockage of some sort in the oil line to that cylinder and thus the sudden onset. The sled was not acting hot in any other way leading up to the seize and the ambient temp was around -2C so it should not have been running hot at all.
I will see better when I go to pick it up when it is done and look at the piston myself. sent them a complete timeline of events, including a picture I took before heading out with a time stamp and a call time to them on my cell phone when it happened. A 20 minute time difference from the picture being taken to the seize up. Also sent historical background data on oil consumption etc along with helmet cam footage from a couple of days before under similar conditions where it was running just fine.
In God we trust, all others bring facts and data..an old saying from my auto industry days.