The Oil Pressure in my 84 380 SE fluctuates betweeen 1.5 and 2 bar while idling.

Normally, the idle pressure is 1.5 bar. Once in a while it may sit at 2 bar while idling. However, the needle is always flickering at 1.5 bar. Never steady.

Is this a matter to be concerned about ? What should I check / replace ?