Quote:
Originally Posted by racing3000
... since a very low noise is coming from the back, although I don't exactly know the actual source of the noise. It is highly possible that the noise is not coming from the differential since this humming like noise is not constant, it is coming and going rarely. ...
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If it is a droning noise then an oil change is a good place to start - though I'd also look at the condition of the rubbers on the subframes (plural for your car I believe), the engine mounts, the flex discs on the propshaft, and the centre propshaft bearing.
I assume it isn't tyre noise?