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Old 09-26-2026, 08:26 AM
X5chemist X5chemist is offline
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Join Date: Jun 2021
Location: Austin, TX
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I've heard it before on vehicles. Especially high milage vehicles. A bad belt tensioner. If yours is hydraulic, check for oil residue.
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'06 X5 3.0i - bought @143,123 miles (12/26/20)
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