How often should engine oil be changed for cars that are rarely driven?
4 Answers
For cars that are rarely driven, the engine oil should be changed every six months. The oil change interval for each car owner depends on the limits of the oil and oil filter. Choosing an oil filter that matches the oil is an important factor in extending the oil change interval. It is normal for engine oil to turn black, as the oil itself has strong cleaning capabilities. Through circulation, the oil can wash away and dissolve contaminants such as carbon deposits, sludge, and metal particles from engine components. Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide cushioning and shock absorption for the engine. Engine oil consists of two parts: base oil and additives. The base oil is the main component of lubricating oil, determining its basic properties, while additives compensate for and improve the shortcomings of the base oil, imparting certain new properties and making them an important part of lubricating oil.
I don’t drive my own car much, and I’ve discussed this issue with mechanics. They said that engine oil can deteriorate even if the car isn’t driven, as it oxidizes and absorbs moisture when exposed to air, leading to reduced lubrication effectiveness. They recommend changing the oil every 6 months or so, and during the oil change, the oil filter should also be inspected to prevent clogging, which could affect engine performance. If the car has been parked in the garage for a long time, remember to start the engine and let it run for a while. It’s advisable to drive the car for about half an hour each week to help circulate the oil and check other fluids like coolant and brake fluid to ensure overall maintenance and prevent minor issues from escalating.
As someone who doesn't drive very often, I've heard experts say online that the oil change interval shouldn't be determined solely by mileage—time is actually the key factor. For lazy people like me who only change oil every 8-10 months, it's best to check the oil level and color before changing. If it turns dark or has water droplets, take action immediately. The environment also has a big impact—if the car is parked outside and gets rained on a lot, change the oil earlier since humid air can degrade the oil. Set up a reminder app based on your personal habits for a simple and hassle-free approach.
I don't drive my car much, and my experience is that time-based oil changes are most crucial. Changing it every 10-12 months is sufficient, low mileage doesn't affect this interval. Unchanged oil will degrade and harm the engine. Occasionally starting the car for short trips helps maintain oil quality, and don't forget to check the tires and battery while you're at it.
