Can Mineral Engine Oil Be Changed Once a Year?
2 Answers
Mineral engine oil should not be changed only once a year, as prolonged use can lead to oxidation and deterioration. Engine oil, also known as motor lubricant, is composed of base oil and additives. The functions of engine oil include: 1. Reducing friction and high temperatures; 2. Cooling and temperature reduction; 3. Cleaning and purification; 4. Shock absorption and cushioning; 5. Rust and corrosion prevention. The method for changing engine oil is as follows: 1. Lift the vehicle with a jack, locate the drain plug, and unscrew it to drain the oil; 2. Remove the oil filter and place a container beneath it; 3. Replace with a new oil filter and add fresh oil. Precautions for changing engine oil include: 1. Perform the change when the engine is warm to ensure thorough drainage of old oil; 2. Add oil and ensure the correct amount is used; 3. After adding oil, start the engine and check for any leaks in the components.
I personally believe that changing mineral oil once a year is usually not acceptable. Inside the engine, the oil undergoes high temperatures and pressures, and over time, it degrades, thickens, and loses its lubricating properties, which can lead to increased wear and even damage to components. Especially if you frequently drive long distances or in congested urban areas, contaminants accumulate faster, and a year may far exceed the recommended mileage. From a safety perspective, if the engine fails, it could endanger driving. I once experienced a minor issue due to delayed oil changes, where the engine noise increased and acceleration became sluggish. It's advisable to follow the manual; most vehicles recommend changing every 5,000-8,000 kilometers or every 6 months for safety. Don't risk major repairs to save a few hundred yuan. Regularly checking the oil condition is essential—for example, pulling out the dipstick to see if the color and viscosity are normal.
