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Is it a Courtesy/complimentary Service check, or are they going to charge you? If they are going to charge you, wait until 1000, Unless you have an ESP and its already paid for.
1000 miles, 5000 miles, 10000 miles, 15000 miles etc. that is the service schedule. Take it in and tell them they can do it if it is complimentary, otherwise you are going to take it to an honest dealer.