This is why I did the oil pressure gauge. Tells ya a little different story than that dummy gauge on the dash.
PSI at idle.....
PSI at 1000 RPM.....
PSI at 1500 RPM.....
Not gonna blow any seals, that's why there's a relief valve in the filter head.....it's under the nut that's just forward of the oil filter.
The factory oil pressure sensor is located on the driver side of the block. it's nothing more than a 5 psi Hobbs switch. As long as it see's 5 psi, the oil pressure that you see on the dash is a "calculated" pressure by the ECM. It bases the oil pressure on the engine RPM and temperature and that's what's displayed on the dash.
If it doesn't see 5 psi, then it sets the MIL.
As you can see, it's not even close to the true pressures at the filter head.
The minimum spec for oil pressure is 10 psi at idle and the pressure should rise 10 psi for every 1000 RPM at a minimum.
You know for sure if this is true for the 2010+ trucks?The ECM has no pressure sensor. All it has is a switch, higher than 6 PSI, on. Lower than 6 PSI, off. 30 seconds of below 6 PSI will cause the ECM to shut down the engine. The gauge is just what the ECM thinks oil pressure is, based off engine temp, run time, rpm, load and some other factors.
I know that the ISB5.9L came some years with a sensor, others with a switch (switch is 2 wire or sometimes one wire with the block being the ground return, sensor is 3 wire) -- and that the sensor may have been discontinued and superseded by the switch. I haven't actually looked on my 6.7L and I am not even sure the switch or sensor would be in the same location on them either.You know for sure if this is true for the 2010+ trucks?