Noise from the differential
My name is Rasmus and I come from Denmark, where cars a quite expensive du to our high taxes, as you may know.
At the moment im in a bargaining, trying to buy a BMW 318i from 2008.
I drove the car to the local test center, in order to get a review of the cars condition. He told me it was a awsome car if not there was this sound coming from the rear differential. He described the sound as a whining.
The noise is hard to notice, and i didn't even notice it before he mentioned it and even then it was quite difficult to hear. My pal, who i braught along to the test center, told me that it was easy to hear when the car was on the car lift and i stepped on the gas pedal.
Is this normal ? and would i be able to drive a long time with this issue? the noise do not bother me, as I can't hear it when i hit the road. If the differential crash completely (is there a chance of that??), will more parts then be destroyed as well ?
sorry for my bad english.