
Brake fluid leakage most commonly occurs in these areas: the brake drain holes near the wheels, the brake fluid reservoir, the brake pedal, etc. Any abnormalities must be repaired promptly. Brake fluid is different from other components - any sign of leakage should raise immediate concern, as brake fluid leakage directly relates to driving safety. Once the brakes fail, the consequences could be disastrous. The causes of car oil leakage are as follows: 1. Poor quality or craftsmanship of engine components, or structural design issues leading to excessive gaps between parts. 2. Wear and positional deviation of engine components, creating gaps during operation. 3. Loose fastening nuts that become detached during engine operation. 4. Aging, deformation, or deterioration of sealing materials like engine oil seals due to prolonged use. 5. Damage or breakage at component fitting locations, causing lubricant leakage. 6. Excessive lubrication oil added, resulting in an overly high oil level. 7. Clogged ventilation plugs causing significant pressure differences inside and outside the engine compartment.

There are actually quite a few places where a car can leak oil, with the most common being the engine's oil pan—a shell at the bottom of the engine. Leaks can occur if it's been jolted, if the bolts have loosened over time, or if the gasket has aged. The valve cover is another hotspot; the rubber seal can harden with age, leading to poor sealing. If the oil filter isn't tightened properly or is installed crooked, it can also seep. Pipe joints and the oil pump location are frequent leak points, especially if rusted or under high pressure, which can cause the connections to burst. Issues in the drivetrain, like a loose transmission oil line, can also result in oil drips. Last time I checked my car, I spotted oil stains underneath—prompt action is crucial to prevent engine damage or even a fire hazard. Park on a clean spot, get under the car to trace the oil drips, roughly locate the source, and then head to a repair shop. Avoid driving recklessly to prevent accidents.

Oil leaks in vehicles primarily occur at several key locations. The most common issue is the sealing of the engine oil pan, which can loosen and leak due to rough road conditions. Another major cause is the aging of valve cover gaskets, where temperature fluctuations accelerate seal failure. The oil filter location is also prone to leaks, especially with improperly installed or low-quality filters. Pipe joints and oil pump interfaces are susceptible to seepage due to rust or high pressure. Transmission oil lines in automatic vehicles may develop issues, causing leaks in the central part of the chassis. Use a light to inspect the chassis and identify the source of the oil stains—red or brown stains are often engine oil, while clear or pinkish stains may indicate transmission oil. Avoid starting the car immediately; perform a quick check to prevent oil spread or engine overheating damage. It's safer and more reliable to drive directly to a professional shop for inspection.

Oil leaks often start from the oil pan area, as the protective seal under the engine tends to deteriorate over time. Valve cover leaks are also common due to aging gaskets and poor sealing. Loose or corroded oil filters and pipe joints can cause dripping as well. Transmission components may leak too, with lighter-colored oil stains. Pay attention to ground traces when parking and don't ignore them—get a mechanic to fix it promptly to prevent greater damage.


