Though BMWs are well known for their enduring performance, luxury, and reliability, these vehicles can experience issues over time, like any other car, and regular maintenance is crucial to ensure your vehicle operates at its best.
As a trusted mechanic in East Washington, Utah (UT), we see oil leaks in BMWs nearly every day in our garage, Bavarian Werkstatte. It is one of the issues that often causes significant stress for BMW owners.
However, it is essential to understand the causes of leaks in BMW vehicles and how to diagnose and repair them. In this comprehensive guide, we will dive deep into the typical causes of oil leaks and how to identify them.
Most Common Warning Signs of Oil Leaking in Your BMW in Washington, UT
- Oil Puddles Under Your Car: Oil leaking onto the ground is the most undeniable sign. When you park your car and notice a dark or greasy puddle beneath it, the engine is losing oil. A worn gasket or a cracked seal may be the culprit.
- Burning Oil Smell: A strong burning oil smell after you’ve been driving is a clear warning sign of an oil leak. This smell occurs when leaking oil drips or seeps onto hot engine components, such as the exhaust or engine block, and then burns off. It is not normal, and it means oil is escaping from where it should stay sealed.
- Visible Smoke from the Engine Bay: When an oil leak becomes serious, you do not just smell it—you actually see it. Smoke rising from under the hood is caused by leaking oil that drips onto extremely hot engine components and ignites immediately. This is a clear warning sign that something is wrong and needs immediate attention.
- Low Oil Level: A clear warning sign when you check the dipstick and consistently find the oil level below the safe mark. If the level drops again soon after you top it up, the engine is losing oil somewhere. This does not happen by accident. It means oil is leaking out while you drive or while the car is parked.
Common Causes of Oil Leaks in Your BMW in East Washington, UT
Valve Cover Gasket Leak
The valve cover gasket is one of the most common causes of oil leaks from your BMW engine. This gasket sits between the valve cover and the engine and keeps oil sealed inside the top of the motor. Over time, the engine’s constant heat hardens and brittles the gasket.
Once that happens, it cracks and shrinks, allowing oil to seep out slowly. Leaked oil usually runs down the engine, emits a burning smell when it contacts hot components, and eventually leaves visible oil stains.
Oil Filter Housing Gasket Leak
The oil filter housing gasket is a small but critical seal that sits between the oil filter housing and the engine block. Its job is to keep pressurized engine oil contained as it flows through the filter and back into the engine.
Over time, the engine’s constant heat causes the gasket to harden, shrink, and lose its sealing ability. When this happens, oil begins to seep out and run down the side of the engine.
If you notice oil leaking from the oil filter gasket, bring your vehicle to Bavarian Werkstatte, and our expert technicians will fix it promptly.
Worn Rear Main Seal
The rear main seal is located at the rear of the engine and seals the crankshaft where it meets the engine block. Its job is to keep engine oil inside while the crankshaft spins.
Over time, this seal hardens and wears out, allowing oil to leak from the rear of the engine.
Replacing the rear main seal is labor-intensive due to its location and often requires removing the transmission, making this repair both difficult and expensive.
Expert Auto Repair Shop Near You in East Washington, UT
Are BMW oil leaks weighing heavily 
on your mind? Allow our team at Bavarian Werkstatte, serving its friends and communities near you in East Washington, UT, to resolve your concerns and help keep your car in fantastic condition.
We are the best in the town because,
- We are a BOSCH authorized auto repair shop and have 40 years plus of BMW-experienced technicians.
- We use the Autologic Diagnostic system to repair your German car
- We offer a 24-month or 24,000-mile warranty