Where do you find the oil pressure sensor for 2006 F-250 superduty Diesel

Sounds like there is wear elsewhere causing the drop in oil pressure. I thicker oil will raise the pressure but could also further damage the engine.

You probably have an air leak in the fuel line. Air bubbles rise to the top-most area of the tubing and form a "vapor lock" . Find the leak, stop the problem! IT's probably a loose connection somewhere.

Hi,
the diesel system on your vehicle works on a continous 'loop". Tank to engine....engine to tank. The fuel filters and the water separator are very susceptible to the diesel fuel 'clouding" , making the fuel heavier to push around the system. The 'clouding' is actually a type of wax which is normally held in suspension within the body of the fuel and thus is not a problem.

The wax starts to plug up the fuel system, and cause lots of problems. The fuel, being harder to push around the system, takes more pressure to move it. This will result in diesel leaqkage at any and all outlets to atmosphere at the pressure end.

The problem is usually resolved by adding an additive to the fuel tank, or having a water separator with a heater., There are also weap-around heating cables which can be fitted to fuel lines to aleviate the same problem. If your water separator has an automatic dump valve, you might like to check that it is functioning correctly and the water content is not freezing and providing an exit for the diesel fuel.

Good luck.

the diesel engine is a 6.0L or a 6.4L? because the 6.0L don't use electronic throttle control. they control the demand of diesel threw the high pressure oil system they have a sensor call injector pressure regulator. this sensor is responsible of maintain the proper pressure in the high pressure oil system so that the engine could start . i also suggest you to check if it is any leak on the high pressure oil system or if the low pressure system is delivering the pressure required for the high pressure system to work properly. to do that you most have a scan tool. also you can check the pressure of the diesel pump that its in the chassis to eliminate the high pressure oil system as the cause of your concern. if u don't have the proper gauges to check the pressure of the diesel pump you could remove the cap of the small fuel filter that is next to the oil filter remove the filter and put the ignition switch in the on position and see in the container if you have a fast or slow filling. if you encounter that the filling is too slow then your problem is with the fuel diesel pump that is on the chassis this pump is called HFCM, Horizontal Fuel Control Module

a misfiring engine wont have enough power to sustain a load thats why when you shift it dies.you need to retify the problem first.check for any presence of water in the diesel fuel.Not enough fuel pressure

There is only 1 filter for the oil, it is #3 in the pic.

check ur oil if color of grayish chocolate milk and or white smoke from tailpipe pretty sure signs of blown head gasket

check the drive shaft balance

I take it you have a crank no start issue, the fuel is injected by high pressure oil, no oil pressure no start, there are 2 oil pumps, low lube pressure and high injection control pressure (ICP) the injection system is hydraulic controls electric actuated fuel injection, if when you crank the engine over and the oil pressure guage goes up base pressure is ok, then its high pressure or the best thing I can say is pull codes and that can give me a good direction to send you in, there are many things that can cause that problem, if the fuel heater shorts out, the pcm and it are on the same 30amp circuit causin the same problem and still you would have proper fuel pressure readings.

replace your oil pressure sensor and have a mechanic do a oil pressure test.