I have a 2003 durmax crewcab and i am concerned with the oil pressure guage, when u come to a stop it gets real close to the red zone, other than this the truck runs strong, i didnt know if it was a bad sending unit or what, i dont know a whole lot about durmaxs this is why i came here to learn.... thank you

Totally normal.

X2. Most of the trucks that I have been in do the same thing. how much psi do you run at 1500 rpm's? This should be 60ish.

x3...mine will be 60ish driving 65 MPH or so...and then drop low when sitting at light.