I just bought my first MB and I love it. Everything seems to be fine with it except I hear a medium pitched (on then off) whistle type sound that makes the same noise at any speed or when I am stopped. It is frequent but not so much that I can take it to the mech. and let them listen. It sounds like it is coming from the rear of the car. Any ideas?

Thanks
Wayne

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83 300TD
Wayne Bentley