How often should engine oil be added?
3 Answers
If using mineral oil, it is generally recommended to change it every six months or after driving approximately 5,000 kilometers. For semi-synthetic oil, the interval is around 7-8 months or 7,500 kilometers. Full synthetic oil can last for about one year or 10,000 kilometers before needing replacement. Types of engine oil: Engine oil can be categorized into mineral oil, semi-synthetic oil, and full synthetic oil. Using test strips to determine oil replacement: If the three rings (deposit ring, diffusion ring, and oil ring) are clearly distinguishable, the oil can still be used. If the oil ring disappears, leaving only the deposit ring and diffusion ring, it is advisable to replace the oil. If only the dark-colored deposit ring remains, immediate replacement is necessary.
There is no strict rule for the frequency of adding engine oil; it mainly depends on how often you check the dipstick. After years of driving, I've developed the habit of pulling out the dipstick every month to check the oil level. If the level is below the minimum mark, only then do I need to add a little oil to top it up. Normally, engines consume a small amount of oil, but if you frequently need to add oil, such as the level dropping significantly within a month or two, it might indicate a leak or oil burning issue, and you should have it checked at a repair shop. It's best to combine this with regular maintenance, changing the oil every 5,000 to 10,000 kilometers, so you rarely need to add oil in between. Developing a habit of checking the oil level casually, like taking a quick look every time you wash the car or refuel, can prevent engine wear due to oil shortage.
As a daily driver, I usually check the oil level before long trips or every two to three weeks to ensure it's within the safe range on the dipstick. If it's low, I top it up with the recommended oil type from the vehicle manual. There's no need to add oil every day unless you notice significant oil leaks or burning. I've also experienced oil thinning due to rainy weather causing the level to drop, in which case adding high-quality oil with anti-rust and anti-wear properties is sufficient. The key is to develop a habit of regular checks rather than adding oil on a fixed schedule, as oil consumption rates vary depending on driving conditions and vehicle age.
