Summary:
Many drivers overlook small oil leaks, but they often lead to more serious and expensive problems. Leaks signal underlying issues in your engine, and catching them early can save you major headaches.
Common Causes of Oil Leaks
- Worn Gaskets and Seals: Heat and pressure degrade these components over time, causing leaks.
- Damaged Pan: Positioned low on the engine, it’s vulnerable to cracks from road debris.
- Loose/Damaged Pan Plug: An improperly installed or stripped plug can easily leak.
- Leaking Oil Filter: Mistakes during installation, like leaving an old gasket behind, can lead to quick leaks.
- Faulty PCV Valve: When clogged, pressure builds up and forces oil through seals.
- Overfilled Oil: Too much increases pressure, causing it to escape through weak points.
- Valve Cover Gaskets: These crack with age and may cause oil to burn on the engine.
- Crankshaft/Camshaft Seals: High wear from constant motion makes them prone to leaks.
- Cracked Engine Block/Head: A severe issue, usually from overheating or impact, requiring professional help.
How to Spot a Leak
- Spots under your car.
- Wet, greasy areas under the hood.
- Burning smell or blue smoke.
- Low oil levels on the dipstick.
Some leaks aren’t visible from the top and may involve parts like the cooler lines or filter housing.
What You Should Do
Identify the source of the leak. Replace damaged components and tighten any loose ones. Clear a clogged PCV valve. When in doubt, consult a mechanic.
Early detection is key—waiting for a warning light could mean engine damage is already underway.
Motor Biscuit
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