No oil pressure! ?? Is this the end? V50 2.0d 2008 130000km

Hey, a week ago, after a highway ride at the traffic lights for a second, the red warning light went on. Immediately again. Engine oil changed and hoped that the spook had an end. On Monday at home In the city, unfortunately, she went again longer. In the driveway I heard a slight knocking engine from and to the mech., which measured the oil pressure, so too little, at temperature pressure oscillates out. Then what is confusing he thought that the two-mass swing wheel would definitely come over the noises from there. Which would I rather have tapped on connecting bearings because of the money-consuming oil pressure. What now? The opinions in the brand-independent forums, because it seems rather not to be a Volvo specific prob, oil pump change connecting bearings over what else is coming to you? Turbo? I’m curious about your opinions. Oil a5/b5 Greeting