I have an audi a6 18.t 2001 . not had it long. Driving it the other day the oil low presure light came on. (i thought it was the low oil level light) so i toped it up and the light went away. then it came on again today during the middle of a 50 mile trip. I assumed i hadent put enough oil in as every time i came to a junction it went off, so topped it up a bit more when i got home. About 2 hrs after that i quickly poped out ( a 2 mile drive) and the light come on again and then about 200meters away from my house the engine started making a rattling noise (sounds just like something stuck in the fans) and allmost a whistling noise. When i got home i read the manual and realised the light was an oil low presure light. Could i of possible seriously damaged the engine?