2021 Detroit DD15 loss of oil pressure

So I've lost all oil pressure on this truck, a 2021 Freightliner with a DD15, the clock is showing ~429,300 miles and 20,059 hours. I've got oil all over the inner side of the driver's side steer tire, on the frame, the shock, spring, drag link, cross shaft, and all over the engine from the fuel filter housing back, and up to the injectors down to the pan, with injectors 2 through 6 weeping oil out of the ports for the feed tubes. What could have let go? Rear main? Rear structure gasket? Front main? Air compressor and/or fuel pump seals? All of the above? I'll see if I can figure out how to post pictures in the replies to this post

 

Nothing that I know of in regards to the engine oil, I had a coolant hose replaced because it had a pinhole that was blowing coolant over the passenger side of the engine and I had the sensors replaced for the low air pressure buzzer

 

There should be enough oil in the pan, I added three gallons yesterday and I keep checking the oil level as best I can. As I'm sitting right now the nose of the truck is facing down a hill at this truck stop so it should help the situation due to more oil pooling near the sump in the pan. I'll check out the oil filter housing and the external lines, but I don't think that's the problem since it's worse the farther back it goes on the engine, and the filter housing looks dry as far as I can tell.

 

There's no code in the system as far as the dash diagnostics will show, there are some unrelated aftertreatment codes. When it starts up it shows an initial "oil pressure low" yellow warning and then an "oil pressure seriously low" warning and a 30 second shutdown timer, which makes me think the sensor is working properly. It's a company truck and I'm on my way to a stealership in a tow truck so I'll keep you guys updated, hopefully I'm going to get some kind of breakdown pay

 

I made mention of it to them and they put it in the notes, hopefully it'll be fixed before too long.