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Old 05-29-2001, 12:13 AM
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I have a 91 420SEL with approximately 98,000 Miles on it. I have tried three different independent mechanics and have received 3 different answers regarding the how often to perform a oil/filter change. One say every 5000 Mi and refers to the maintenence schedule in the owner's manual. One say every 3000 miles. The third say every 3750 miles. What is the recommended milage between oil changes?
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