I only have 3,000 miles on a brand new car and the dashboard reads life 50%
That is referring to the life expectancy of the engine oil, so the system must be set at 6000 mile intervals to have the car serviced. There is a lot of information in your owners manual about your vehicles systems, what they can tell you about your car, when to service equipment etc. take some time and read it, you will be glad you did.
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