Use Pressure Gauge, Part No. 3375275, to measure lubricating oil pressure.
Install the pressure gauge to the main oil rifle and observe the oil pressure.
Low Idle (minimum allowable) 80 kPa [10 psi]
At 1300 RPM (minimum allowable) 205 kPa [30 psi]
At 2100 RPM 310 to 375 kPa [45 to 55 psi]
NOTE: On STC equipped engines, oil pressure will appear higher (approximately 620 to 690 kPa [90 to 100 psi]) when the oil temperature is cold due to the viscosity sensor.
