PEUGEOT INSUFFICIENT OIL PRESSURE SW 2008

I have a 307 Station and for a few days it gives me a sign of "insufficient oil pressure" at first I thought it was something temporary, but now the engine has a different noise, such as a pounding so I have it stopped and I don't know what to do.

Hello, if you give you the oil signal you first had to stop circulating, the noise you make is due to the lack of oil pressure the crankshaft bearings are destroyed and therefore you listen to the pounding, now it is time to open the engine and look at everything crankshaft, connecting rods, pistons, cylinders etc.