Warm up the engine while driving, the oil temperature should be at least 80°C. Under normal conditions, this temperature is reached after a 15-kilometer run.
Remove the wire from the oil pressure switch sensor and unscrew the switch. For the installation position of the oil pressure switch, see Fig. K-1006 in paragraph 1.4.
Instead of the switch, screw in a pressure gauge with a corresponding flange.
Start the engine and let it idle. Read the oil pressure on the pressure gauge. At idle, the pressure should be about 0.8 bar.
[The material was borrowed from the website MITSUBISHIMAN]
Install and tighten the oil pressure switch. First apply sealant to the 2-H5 thread, such as Loctite 242.