The 4S shop did not change the engine oil during the first maintenance

[DelBrynlee]

4S shop first maintenance has the engine oil change project. Normally, the first maintenance mileage is 5000 kilometers or three months from the date of purchase, not only is there a free maintenance offer, including engine oil change, oil filter materials and labor costs, but also a full vehicle inspection. If the 4S shop did not change the engine oil during the first maintenance, it is likely because the car mileage has not yet reached the range of the first maintenance. Methods to check whether the 4S shop has changed the engine oil: The most direct method is to observe the color of the engine oil. The steps are as follows: 1. First, find the handle of the oil dipstick in the engine compartment, 2. Then prepare a piece of tissue paper. 3. Pull out the oil dipstick and drip the oil onto the tissue paper, then observe the color directly. 4. If the color appears brown and transparent, it means the 4S shop has changed the engine oil for the car. But if the color appears black, or even mixed with some impurities, it indicates that the 4S shop did not change the engine oil for the car.