
Check the engine oil level promptly to ensure it is within the safe range. Locate the oil seal or gasket, apply heat-resistant sealant, or disassemble and replace it. Add a solute that can enhance rubber plasticizer to the engine oil.

Don't panic if you notice engine oil leakage - I've experienced it myself. First step is to use a flashlight to locate the leak, paying special attention to common spots like cylinder head gaskets and oil pan seals. If you only see a thin oil film, clean it off and monitor for a few days - it might just be residual oil from the last maintenance. But if the leakage persists or even drips, don't ignore it. Issues like aging crankshaft front/rear oil seals can be fixed at a local shop by replacing rubber rings for a few hundred yuan. However, if it's a blown cylinder head gasket requiring engine disassembly for major repair, expect to spend at least 3,000-5,000 yuan. Remember never to delay fixing oil leaks, especially on turbocharged cars where high temperatures can lead to spontaneous combustion - safety always comes first.

When I first noticed oil stains in the engine compartment, I wiped the marked area clean with a paper towel and checked again after three days. Oil leakage can be categorized into active dripping and passive permeation, with the latter having minimal impact. The key is to monitor the dipstick readings: if consumption exceeds half a liter per thousand kilometers, it warrants attention. I once encountered the awkward situation of a loose oil filter, which I fixed by tightening it with a wrench and adding a washer. However, for issues like aged valve cover gaskets, you'll need to remove the ignition coils to replace the seals—something those with strong DIY skills can handle. A reminder: oil quality is crucial. I experienced worse leakage with low-viscosity oil, but switching to the manufacturer-recommended grade made a significant difference.

Engine oil leakage can stem from various causes. Last time, I saw a Focus where the crankcase ventilation valve was clogged, causing internal pressure to force oil out through the valve cover gap. Worn-out gaskets can usually be fixed for a few dozen yuan, but be cautious with aluminum alloy engine blocks—over-tightening bolts can warp the surface, requiring a costly milling repair that may cost thousands. If you notice oil leakage, avoid randomly adding stop-leak additives, as they might clog oil passages. It's recommended to wipe the engine surface every time you wash your car; this keeps it clean and helps spot oil stains early. For turbocharged cars, pay special attention to the oil return pipe connections.


