油过滤器 (abbreviated as oil filters) play a crucial role in the lubrication system of automotive engines. It can effectively filter out impurities, metal debris, dust and other pollutants in the engine oil, ensuring the cleanliness of the oil supplied to the engine, thereby protecting various components of the engine and extending its service life.
If it has a problem, it can result in insufficient lubrication, increased engine wear, or severe cylinder failure!

第一的: Replace regularly, don’t wait for reminders.
Best solution: The oil filter must be changed together with the oil!
在正常情况下, the recommended replacement cycle according to the vehicle manual is usually consistent with the oil replacement cycle:
Mineral oil: About every 5000 公里或半年.
Semi synthetic engine oil: Approximately every 7500 公里或 9 月.
Fully synthetic engine oil: approximately every 10000 公里或 1 年.
When driving short distances frequently, the distance can be appropriately shortened to 3000-5000 公里 (especially in areas with sandstorms in spring).

其次, if these symptoms appear, check them immediately.
Look at the dashboard: light up the oil lamp, stop immediately!
This is a warning for low oil pressure. Although there are many reasons that may cause insufficient oil pressure, many of them are related to the oil filter. 例如, clogged filter elements can cause the oil to not circulate properly, or abnormal opening of bypass valves can lead to pressure relief. Once the oil lamp lights up, it must be stopped immediately for inspection!
1. The engine is abnormal, with noticeable shaking at idle or a clicking sound during acceleration.
This may be due to the presence of a large amount of impurities in the engine oil entering the engine, causing increased wear and tear on internal components of the engine.
2. Weak acceleration and inexplicable increase in fuel consumption.
When the oil filter is clogged or the filtering effect is poor, the amount of oil entering the engine may decrease, directly affecting power output.

第三, 这 “Physical Examination” major.
If there are doubts about the condition of the oil filter, or if it is impossible to accurately determine whether the oil filter needs to be replaced through the above methods, the vehicle can be sent to a professional car repair shop or 4S shop for inspection. The maintenance personnel will conduct professional inspections on the filter element and provide accurate recommendations based on the actual usage and maintenance records of the vehicle.

Fourthly, these extreme situations need to be changed in advance.
1. Dusty road conditions or extreme environments.
During sandstorms or driving on construction sites, dust particles in the air can easily enter the combustion chamber through aging or damaged air filters, forming ash after combustion, or unburned particles can enter the crankcase through piston rings and mix with engine oil to form sludge, accelerating filter blockage.
2. Driving through water.
If the water depth exceeds the installation position of the oil filter (usually located at the bottom of the engine), 少量的水可以通过滤清器透射到油中. 但是这种情况很少, 在内部断层（例如气缸垫片损伤和冷却液泄漏）中，油入口更为常见.
3. 发动机大修或破裂.
新的或大修的发动机将在休息期间产生大量的金属碎屑, 并且需要提前更换过滤器.