SES Light and no Throttle after 2500RPM

GMB14U2NV

So they managed to narrow it down. There is a line in the codes that throws for oil pressure. But there is also P0524 being thrown and a P0600.
The Nissan Tech Line and Master Tech at the dealer have now found the issue is just like others I have seen on here from prior posts with different descriptions.
The problem is now thought to be Intake Valve Timing/Positioning Solenoid failed or fouled.
The other parts associated are the 4 cam housing sensors. Also either failed or Fouled. The MSTR tech says one set barely moves like -5 to 5 and the other is stuck at +32 or 34.
The cause:
They believe that the owners before trading the vehicle in and me buying it, had added a ton of Restore Engine Compression fluid. Or they added RiSLONE engine compression additives. Probably trying to hide smoking issue which we are now addressing alongside this!!!! The fluids formed a skin and film on just about everything in the engine and cooked to a crust in some areas. It also narrowed the Oil Cooler lines and damn near clogged the cooler itself. What it really screwed up was the sensors in the heads and the intake valve timing solenoid.

FIX:
Have the Intake Valve Timing Solenoid replaced and the 4 cam housing sensors.
NEVER ADD/OVERFILL ADDATIVES TO THE NISSAN ENGINES. IT JACKS UP ALL THE SENSORS AND SERIOUSLY SCREWS UP THE COMPUTER!!!
Aside from the fact I'm getting all new parts and such.... IMO - just use high end motor oils that are fully synthetic. Maybe once every 15K use Motor Medic engine flush exactly as described on their label. But proper oil and frequent changes that's really not necessary on these motors.