How is the first vehicle maintenance time calculated?

[MacAdriel]

Car first maintenance date is calculated from the date of purchase invoice, according to the time and mileage required in the manual, generally around 3 months or 3000 kilometers, different brands of cars have different requirements. The following is about the car first maintenance content: 1. Change the oil and oil filter. 2. Clean the air filter, air conditioning filter, check whether the brake fluid, antifreeze, power steering fluid are missing, if not enough then add. 3. Check whether the chassis parts and suspension are abnormal and loose and the tire pressure. 4. Check whether all lights are complete and good. 5. Measure whether the battery voltage is normal.