Dropping Oil Pressure
High guys, another oil pressure question....
I know the pressure has to be above 2.5bar when hot at full revs, but I've noticed the pressure reading has gradually dropped since I got the car.
It used to be about 6bar when cold and about 5bar when hot, dropping to about 3bar at idle. Nowadays, it always sits at just under 4bar when cold or hot on the move, and when hot, drops to about 0.5bar at tickover eek!
My car doesn't seem to use any more oil than it used to, in fact I can't see any smoke when I rev the engine up to near red line.
Is my oil pump on it's way out ???? Any other things to check before I brace up and wait for the engine to give up ???