Isx shuts down while driving

[Downthehaul]

recap events here:
2010 prostar, isx 871 engine, still mandated tech on it.

Engine shuts off while driving, it starts happening after running for 10 minutes then happens every 2 minutes or so. I checked the wires near the battery compartment, can’t find any shorts/breaks anywhere in the electrical system.

Had dpf/doc cleaned, they’re nice and clear.

Insite showed a code for low engine oil rifle pressure. Can this be a plugged filter? I changed the oil pressure sensor just a few years ago (I only know of one oil pressure sensor, is there only one?)

The oil pressure gauge starts about 40psi when I crank it up, then it seemed to wobble down and up slowly until it got to about 20. This is from dead cold in 60 degree weather and running about 5 minutes

I’ve also had bluish/black fuel for a while now. I’ve been putting biocide in the fuel but it’s had no effect so that seems not to be the problem. Could it be oil in the fuel? Could injector cups possibly do this?