Is Engine Cover Oil Leakage a Serious Problem?

2 Answers
DominicAnn
07/29/25 4:08pm
Minor oil leakage is considered normal, but severe leakage indicates a potential serious issue with the oil seal's sealing performance, requiring prompt inspection and repair. The specific causes are as follows: Damaged oil pan: Due to the relatively low ground clearance of most vehicles, driving on rough or complex terrain can cause the oil pan to be scraped or damaged by flying stones. As the container for storing engine oil, any damage to the oil pan will immediately result in oil leakage. Solution: Replace the oil pan. Loose or stripped drain plug: During vehicle maintenance or oil changes, if the drain plug becomes loose or stripped due to technician negligence or improper operation, engine oil leakage is inevitable. Solution: Tighten the drain plug. Excessive crankcase pressure: Overfilling with oil or a malfunction in the crankcase ventilation system can lead to continuous accumulation of mixed gases in the cylinders, causing excessive internal crankcase pressure. This high pressure can force oil out through the seals, resulting in leakage. Solution: Remove excess oil. Aged valve cover gasket: For older vehicles or those with high mileage, aging of the valve cover gasket is normal. In such cases, simply replacing the valve cover gasket and sealing ring will suffice. Solution: Replace the valve cover gasket.
Was this review help?
13
3
Share
AugustLynn
08/13/25 12:00pm
Oh, engine oil seepage is no trivial matter! Having driven for so many years, I've seen plenty of similar cases. Oil seepage is usually caused by aging oil seals, loose screws, or accidental spills during oil changes. If it's just surface oil stains, wiping them clean is sufficient, and the impact is minimal. However, if the seepage persists, the problem becomes serious: reduced oil levels can lead to insufficient engine lubrication, overheating, and even cylinder damage. In severe cases, oil dripping onto the exhaust pipe can easily cause a fire, posing significant safety hazards. It's advisable to regularly check the oil level. If you notice seepage, clean it and observe for a few days. If it recurs, head to the repair shop immediately for inspection. During routine maintenance and oil changes, using new sealing components can prevent future issues. Don't skimp on repair costs—safe driving is priceless.
Was this review help?
11
3
Share
Expand All
More Forum Discussions

What does the speed limit of 30, 40, 50, 70 mean?

According to Article 45 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China": On roads without a central dividing line, the speed limit for urban roads is 30 kilometers per hour, and for highways, it is 40 kilometers per hour; on roads with only one motor vehicle lane in the same direction, the speed limit for urban roads is 50 kilometers per hour, and for highways, it is 70 kilometers per hour. The image shows a highway without a central dividing line, so the maximum speed limit is 40 kilometers per hour. Additional Information: Article 46: When a motor vehicle encounters any of the following situations, the maximum speed shall not exceed 30 kilometers per hour, and for tractors, battery-powered vehicles, and wheeled special-purpose motor vehicles, the speed shall not exceed 15 kilometers per hour: When entering or exiting a non-motorized vehicle lane, passing through a railway crossing, sharp curves, narrow roads, or narrow bridges; when making a U-turn, turning, or descending a steep slope; when encountering fog, rain, snow, dust, or hail with visibility less than 50 meters; when driving on icy, snowy, or muddy roads; when towing a malfunctioning motor vehicle.
2
3
Share

What is the battery model for the Mercedes-Benz C180?

The battery model for the Mercedes-Benz C180 is CCA800AAGM. Background of the Mercedes-Benz C180: The Mercedes-Benz C180 is a C-Class model. Beijing Benz officially launched the C180 variant of the C-Class in June 2010, naming the model C180. It is equipped with a 1.6-liter supercharged engine, with an actual engine displacement of 1598 milliliters, which is less than 1600 milliliters. Performance of the Mercedes-Benz C180: Although the new Mercedes-Benz C180K model is only equipped with a 1.6-liter displacement engine, its maximum power and torque reach 115Kw/5200 and 230N.m/3000-4500, respectively, which are 15Kw and 50N.m higher than those of the BMW 318i with a 2.0-liter displacement. The engine of the FAW-Volkswagen Audi A4L 1.8TFSI model has a displacement of 1.8 liters and uses direct fuel injection and turbocharging technology. Compared to Mercedes-Benz's 1.6-liter supercharged engine, the difference in power and torque between the two is not significant.
9
4
Share

Can the Volkswagen Lavida continue to drive when the OBD light is on?

Volkswagen Lavida can continue to drive when the OBD light is on. Definition of OBD: OBD is the On-Board Diagnostics system. This system continuously monitors the operating condition of the engine and the working status of the exhaust after-treatment system. Once it detects a situation that may cause excessive emissions, it will immediately issue a warning. When a fault occurs in the system, the malfunction indicator lamp or check engine warning light will illuminate, and the OBD system will store the fault information in the memory. Relevant information can be read in the form of fault codes through standard diagnostic tools and diagnostic interfaces. Based on the prompts of the fault codes, maintenance personnel can quickly and accurately determine the nature and location of the fault. Working principle of OBD: Through various emission-related component information, it connects to the Electronic Control Unit (ECU), which has the function of detecting and analyzing emission-related faults. When an emission fault occurs, the ECU records the fault information and related codes, and issues a warning through the malfunction indicator lamp to inform the driver. The ECU ensures access to and processing of fault information through a standard data interface.
8
3
Share

What is needed for a new car to hit the road?

For a new car to hit the road, vehicle insurance must be active, and the new car needs maintenance. Introduction to insurance activation: Nowadays, when people buy a car, vehicle insurance is a key consideration. Compulsory traffic insurance is generally purchased due to legal requirements. For commercial insurance, individual considerations vary, leading to a wide range of insurance options. Today, we are not discussing the purchase of commercial insurance but rather emphasizing that after purchasing commercial insurance, car owners must pay attention to the activation time of the insurance. It is advisable to hit the road only after the insurance is active, as the saying goes, "Better safe than sorry." If a traffic accident occurs before the insurance is activated, the costs will have to be borne by the individual. Introduction to new car maintenance: For a brand-new car, washing the exterior is sufficient, but interior maintenance is crucial. Since the car has just left the factory, the odors from interior decorations and materials have not yet dissipated and may ferment and spread inside the cabin. Therefore, people often notice some peculiar smells when driving a new car. At this stage, performing interior maintenance is highly necessary.
5
0
Share

How long after passing can you take the Subject 2 test?

Each driving school has different policies. Some schools allow you to take Subject 2 just 15 days after passing Subject 1, with rapid progress—Subject 3 and Subject 4 follow immediately after another 15 days, enabling you to obtain your driver's license in about one and a half months. More details about Subject 2 are as follows: Overview: Subject 2, also known as the small road test, is part of the motor vehicle driver's license assessment and refers to the field driving skills test. For small vehicles (C1/C2), the test includes five mandatory items: reverse parking, parallel parking, hill start, right-angle turn, and curve driving. Additional Information: If you fail the Subject 2 test for the first time, you are allowed one retake. If you do not take the retake or fail it again, the test session ends, and you must reschedule the test after ten days. Within the validity period of the driving skills test permit, the number of rescheduled tests for Subject 2 and Subject 3 (road driving skills test) cannot exceed five times.
11
0
Share

Can Teana use 5w40 engine oil?

Teana can use 5w40 engine oil, but it depends on the situation. Different vehicle conditions are as follows: If you are a new Teana owner who has just purchased the car, it is not recommended to use 5w40 engine oil during the first maintenance. Since 5w40 has relatively higher viscosity, poorer fluidity, and greater resistance, it increases the engine's operating resistance, thereby increasing the car's fuel consumption. Additionally, new cars have a break-in period and are not suitable for using high-viscosity engine oil. It is recommended to use the fully synthetic 5w30 engine oil specified in the maintenance manual. However, if the Teana is already around 10 years old, then using 5w40 engine oil is recommended. As cars age, engine wear becomes more severe compared to new cars, and the higher viscosity of 5w40 oil compared to 5w30 helps protect the engine's components. Engine oil recommendations: If you frequently drive on highways, using 5w40 engine oil is recommended. When driving at high speeds, the engine operates more intensely, leading to significantly increased heat generation and wear. In such cases, the higher viscosity and better high-temperature resistance of 5w40 oil are beneficial. Conversely, if you often drive in congested urban areas, using lower viscosity 5w30 oil is recommended. Using 5w40 oil in such conditions can lead to excessive engine carbon buildup and increased fuel consumption.
18
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.