Can You Change Engine Oil Without Replacing the Oil Filter?
3 Answers
You can choose to change the engine oil without replacing the oil filter, but it is generally recommended to replace both the oil and the oil filter simultaneously. The replacement intervals for engine oil and oil filters are as follows. Engine Oil Replacement Interval: Generally, mineral oil can be replaced every 5,000 kilometers, while semi-synthetic oil can be extended to 7,000 to 8,000 kilometers. Full-synthetic oil, being of the highest quality, can be replaced around 10,000 kilometers. When choosing engine oil, it is not necessary to opt for full-synthetic oil exclusively; more emphasis should be placed on the vehicle's manual and professional advice. Oil Filter Replacement Interval: The oil filter is usually replaced at the same time as the engine oil. In general, lower-quality engine oil contains more impurities, which increases the pressure on the oil filter during the filtration process, thereby affecting its functionality. Higher-quality engine oil, with fewer impurities, can extend the oil filter's lifespan to varying degrees.
I think it's a bit risky to only change the engine oil without replacing the oil filter. The filter is specifically designed to trap contaminants in the old oil, such as dust and metal particles. If you don't replace it, the impurities in the old filter will mix with the new oil and circulate through the engine, potentially causing blockages and increasing wear. In severe cases, it could lead to abnormal engine overheating or even premature failure, which would be a major headache. Changing the oil filter along with the oil only costs a few dozen extra bucks, but it protects the heart of your car, ensuring peace of mind and safety. Personally, I always insist on replacing both during regular maintenance, opting for a high-quality filter that can last around 10,000 kilometers. Don't skimp on these small savings only to pay much more for major repairs later.
From my driving experience, changing only the engine oil while skipping the oil filter is absolutely not advisable. When the filter gets old, its screen gets clogged with impurities, and the new oil gets contaminated with that debris as soon as it enters, becoming dirty after just a few circulation cycles. Engine components rely on clean oil for lubrication, and with this dirty oil mixing in, parts like pistons and bearings wear out faster, causing the car to lose power over time and potentially increasing fuel consumption. Some people try to save money and time by doing this, but engine repairs could cost thousands, making it not worth the risk. The oil filter should be replaced at the same frequency as the oil change, every 5,000 to 10,000 kilometers—it's a simple swap. When the oil gets dirty, replace it along with the filter to keep the car running smoothly and durably.
