My mechanic used Lemforder for the engine mounts, and the transmission mount was replaced too. I know before the engine mounts were replaced, I could feel a slight vibration in the steering wheel at idle. Now that is gone.

Using "vibration" to describe the noise I'm referring to may not be an accurate way to describe it. Again, it's nothing that I can really feel. It sounds like it could be a panel or something vibrating in the engine compartment.

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1986 300SDL - 116K
2014 Prius Plug-in (company car)
2014 Q5 TDI (wife's car)