Is it necessary to change the engine oil for a car that has been in stock for 10 months?
2 Answers
Whether it is necessary to change the engine oil for a car that has been in stock for 10 months depends on the quality of the oil stored in the car. If the oil quality is found to be problematic upon inspection, it should be changed; otherwise, it is not necessary. Below is some relevant information about car engine oil: 1. The function of engine oil: Car engine oil lubricates, cleans, cools, seals, reduces friction, prevents rust, and protects against corrosion in the engine. 2. Engine oil determines the engine's lifespan: The engine is the heart of a car, containing many metal surfaces that move against each other. These components operate at high speeds, in poor environments, and can reach working temperatures of 400°C to 600°C. Under such harsh conditions, only qualified lubricating oil can reduce wear on engine parts and extend their service life.
I've seen many similar cases where the oil in cars that have been sitting for 10 months needs to be changed—this is not alarmist talk. Engine oil exposed to air oxidizes and deteriorates, much like opened cooking oil that goes rancid over time, reducing its lubricating and cleaning capabilities. Some cars parked in open lots experience temperature fluctuations and rainwater seepage, causing the oil's water content to exceed limits. Prolonged inactivity can also lead to sludge formation. Just last week, I helped a friend deal with such a car—the factory oil came out milky white. The cost of an oil change isn't high, but it prevents future engine seizure issues. While you're at it, check the battery and tires too; prolonged inactivity can drain the battery and cause tire deformation.
