Will 4S shops say they have changed the engine oil when they haven't?
2 Answers
4S shops generally do not have this situation, many 4S shops already have monitoring functions. The following is the relevant introduction of engine oil: The role of engine oil: That is, engine lubricating oil, known as the 'blood' of the car, can lubricate, clean, cool, seal, reduce wear, prevent rust, and prevent corrosion to the engine. The working temperature of engine oil: The engine is the heart of the car. There are many metal surfaces in the engine that rub against each other. These parts move fast and the environment is poor, and the working temperature can reach 400 degrees to 600 degrees. Under such harsh working conditions, only qualified lubricating oil can reduce the wear of engine parts and extend their service life.
I've actually experienced this before! Last year, I got my car serviced at a dealership in the eastern part of the city, only to find the oil dipstick pitch black with unchanged levels when I got home. Later, I wised up and started marking the filter housing with a marker before each service. Once, when picking up my car, I noticed the mark was untouched and confronted them on the spot. The technician stammered, claiming they forgot to record it, and ended up compensating me with three free services. My advice to everyone: take photos of the oil level before servicing, request to see the old parts, and ensure the replacement items are clearly listed on the invoice. Nowadays, some shops have real-time monitoring in their service bays—asking to review the footage is the most reliable approach.