2019 Sub oil pressure

[SEP-547]

Always set around 40psi regardless of conditions since I bought it at 41,000.  Last two weeks, hot idle after driving,  20-25.  Starts cold at 40.  drops down to that range after total warm up.  Any thoughts?  Mobil 1, changed every 5,000 miles.

[CamGTP]

Completely normal oil pressure. My Silverado has had 40 cold and 25psi hot for the 6 years I've owned it.

[SEP-547]

Thanks Cam.

[newdude]

Normal. 

 

35-40psi is typical cold start idle or a few minutes after starting it. 

 

Anything above 3500rpm the oil pump switches to the high pressure stage and it will probably see 50-75psi and then settle back down once the RPMs drop below 3500.  

 

Hot idle these run 20-30psi on the gauge.  

 

To really get the most accurate oil pressure readings however, an oil pressure tester is ideal.  The gauge has some buffer to it and its "approximate".