I have a universal diesel m25, the warning buzzer comes on. The engine is not running hot and the oil level is full.
I had the same problem on my Catalina 28 with the Universal M3-20. It turned out that the Oil pressure sensor was bad. Ordered replacement from Catalina Direct problem solved.I have a universal diesel m25, the warning buzzer comes on. The engine is not running hot and the oil level is full.