How to Determine When Engine Oil Needs to Be Changed?

3 Answers
NathanAnn
07/29/25 6:55pm
Pull out the dipstick, then drip the oil from the dipstick onto a tissue paper to observe the color and viscosity of the oil. If the color appears quite black, it should be changed. Below are specific details about engine oil: 1. Generally, fully synthetic oil needs to be changed every eight thousand to ten thousand kilometers. 2. Engine oil is referred to as the lifeblood of the engine. Inside the engine, oil not only lubricates but also cleans, seals, buffers, prevents rust, and dissipates heat. Without oil, the engine cannot operate. During engine operation, the oil forms a thin film on the surfaces of various components inside the engine, preventing direct contact and friction between them.
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LaEmery
08/14/25 12:42pm
Checking if the engine oil needs changing is actually quite simple. Having driven for over a decade, I always do it myself: Park on level ground, wait at least 30 minutes for the engine to cool, then pull out the dipstick, wipe it clean, reinsert it, and pull it out again to check the oil level—ensuring it's between the marked lines. Color is key: fresh oil is golden or light brown; if it turns deep black or dark, it's dirty and time for a change. Dab some on a paper towel—if you spot impurities or metal shavings, replace it immediately. Don’t rely solely on mileage; I check the color and viscosity every 5,000 km or so—if the oil feels too thin or sticky, act fast. Regular maintenance prevents engine wear and saves big money, especially in hot summers or dusty areas. Never wait until the car shakes or gets noisy—by then, it might be too late.
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MargaretLee
10/15/25 2:10am
As a young person, I think checking engine oil is pretty cool! I often use an app to remind myself to check: wait a few minutes after parking to let the oil settle, pull out the dipstick to see if the level is between the high and low marks, and if the color changes from bright yellow to dark black, it's time to change. A simple DIY test is to drop a bit of oil on a test paper; if the diffusion ring is unclear or has stains, it indicates oxidation. Following the vehicle manual's recommendations, I usually change it every 6,000 kilometers or six months. To save hassle, watch out for signs like difficulty starting the engine or a sudden increase in fuel consumption. Spending a bit more on a filter during maintenance can extend its life by a few months—worth it. Modern cars sometimes have sensor alerts—don't ignore them. Safety first; regular checks prevent unexpected breakdowns.
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