
The causes of oil filter leakage are: 1. Aging or deformation of the rubber sealing ring on the oil filter base; 2. Loose transmission oil seal leading to overflow. The solutions for oil filter leakage are: 1. Replace the rubber sealing ring; 2. Ensure the oil level does not exceed the MAX mark when adding oil. The hazards of oil filter leakage include: 1. Internal engine damage; 2. Burning out piston and crankshaft components; 3. Complete engine failure. The working principle of an oil filter is that during engine operation, metal shavings, dust, carbon deposits oxidized at high temperatures, colloidal deposits, and water continuously mix with the lubricating oil. The function of the oil filter is to filter out mechanical impurities and colloids, maintaining the cleanliness of the lubricating oil.

I also encountered an oil filter leak issue recently, which was quite a headache. It happened shortly after installing a new filter – a few days of driving later, I noticed a small oil puddle under the parking spot. Upon closer inspection, oil was dripping from the filter base. Further examination revealed that the worker hadn't tightened it properly during installation, and the sealing ring was misaligned. Leaks commonly occur due to hardened or aged sealing rings, especially accelerated by summer heat, or from poor-quality filters with micro-cracks. High oil pressure can also force leaks, though this is rarer. The solution is straightforward: first clean around the filter, then gently wiggle it by hand to check for looseness. If a leak is found, don't delay—visit a professional shop for a replacement. Prevention tip: supervise the filter replacement process during each maintenance, opt for branded products, and tighten according to the manual's torque specifications. Don't underestimate oil leaks—low oil levels cause engine overheating, and severe cases can lead to piston scoring, costing thousands to repair. Now, I check the chassis myself every three months for peace of mind.

In the car repair community, oil filter leaks are considered common minor issues. The main causes fall into three categories: improper installation such as the filter not being tightened properly; aging or damage to the sealing ring after prolonged use; or quality defects in the filter itself leading to cracks. Vibration and bumpy roads can also easily loosen connections. In the early stages, oil leaks usually appear as minor stains, which gradually worsen. Timely action is crucial—first, wipe the leak point clean with a rag and observe for half an hour. If the leak persists, the filter must be replaced. DIY fixes are possible but risky, so it's best to seek professional help. Prevention is key: for example, replace the oil filter every 5,000 kilometers when changing the oil, and avoid cheap, low-quality products. Otherwise, worsening leaks can lead to insufficient oil, engine lubrication failure, accelerated wear, or even engine failure. I recommend developing the habit of glancing under the car after each parking session—early detection saves big money.

A car may start leaking oil after a few years, and one common issue is with the oil filter. This usually happens when the oil filter isn't tightened properly or its sealing ring is damaged. Signs of leakage include oil spots on the ground or a wet area under the engine. The main causes are careless work during oil changes or high-temperature aging of the sealing ring. Don't delay fixing it, as low oil levels can seriously harm the engine. Try tightening the filter yourself first; if that doesn't work, quickly visit a repair shop for a replacement. Remember, regular maintenance checks can prevent such issues.


