Thank you for the response. It is one turbo engine. On cruise I can do 750 rpm and it is 35psi max Breather tube smoke always .
I don't think that the issue is in the gauge or sensor. ((
Did the oil test....all good....Using same tipe of oil. On idle with 600 rpm i have 25psi with 180 F water temp. On 700 rpm 30psi On 750 rpm...
Trs100.... I Have same problem on my cat c15 with 825000. Did you find out what was wrong with your engine? or give an idea what can be wrong.