
Here are the considerations for selecting engine oil: 1. Choose engine oil based on the requirements of the engine. It is unnecessary to use overly advanced oil in engines with lower requirements, nor should lower-grade oil be used in engines with higher requirements. 2. Multi-grade oil is preferred as it is economical, long-lasting, and efficient, providing better protection for the engine. Due to its characteristics, multi-grade oil may appear darker earlier or have lower oil pressure compared to regular oil, which is normal. 3. Some domestic brand engine oils are of excellent quality and significantly cheaper than imported counterparts, making them a reliable choice without the need to blindly pursue 'foreign oils.' 4. If the engine is in good condition and the seasonal temperature is low, it is advisable to use lower-viscosity oil to ensure smooth oil flow. In high-temperature seasons or when the engine is severely worn, higher-viscosity oil helps form an oil film and reduces engine wear.

As an average car owner who has driven for several years, I didn't understand much about engine oil at first but gradually learned. It's important to regularly check the oil level, about once a month—just pull out the dipstick, wipe it clean, reinsert it, and ensure the oil level is between the min and max marks. If it's low, top it up promptly. The oil change interval is also crucial, typically every 5,000 to 10,000 km. Once, I went over 10,000 km without changing it, and the engine started roaring while the oil turned black and thickened, damaging the engine and increasing fuel consumption. The oil grade must match the manual, like 5W-30—thinner in summer heat and thicker in winter—don't use the wrong type. I opt for full synthetic oil; it's more expensive but offers better engine protection. Don't overlook this small thing—major repairs can cost thousands and be heartbreaking. Check more frequently during cold starts or heavy traffic to prevent rapid oil degradation.

I've been driving for a while and have gained some experience. Engine oil is no small matter that can be taken lightly. I pay attention to the oil level, making sure it's not too low or too high, as being too high can easily cause leaks. The oil grade is crucial—don't change it arbitrarily. I stick with 5W-30 for stability. Don't skimp on oil quality; using cheap, inferior oil once caused blue smoke and nearly led to a major repair. Don't rely solely on mileage for oil changes—consider driving conditions. In heavy city traffic, change it every 5,000 km, while on highways, you can stretch to 7,500 km. Always replace the oil filter during an oil change—a small cost to prevent big problems. Oil temperature matters a lot. I use thinner oil in hot weather and thicker oil in cold weather to protect the engine. Skipping regular maintenance leads to faster wear—I learned the hard way with a noisy engine and wasted money. Make checking the dipstick a habit—it saves hassle, money, and extends your car's lifespan.

As a daily commuter driving dozens of kilometers every day, don't neglect crucial oil checks. Inspect the dipstick monthly to ensure proper levels and top up if low. Always use the oil grade specified in the manual - I use 5W-20 for better fuel efficiency. Change oil regularly without delay - I replace mine every 7,500 km to maintain fresh lubrication, protect the engine, and prevent carbon buildup. Neglecting dirty oil leads to sluggish engine performance, wasted fuel, and painful expenses. Keep it simple with early prevention to avoid bigger troubles.


