Explanation of Oil Leakage in Dry Dual-Clutch Transmissions

1 Answers
Johnathan
07/30/25 12:15am
Oil leakage in dry dual-clutch transmissions may occur due to housing aging, improper sealing, or material issues, requiring replacement of oil seals or the entire assembly. Symptoms of the issue: After oil saturation, a series of fault phenomena may appear, including vehicle slippage, shaking, unusual noises while driving, and engine problems. Causes of leakage: Possible causes include normal wear and aging of transmission seals over time, improper sealing after housing disassembly, or material defects. The main culprit of clutch oil leakage is the aging of the input shaft bottom oil seal, which requires replacement. In severe cases, replacing the entire assembly, adjusting clutch disc clearance, and replacing the torsional vibration damper repair kit and front oil seal may be necessary to prevent oil leakage.
Was this review help?
14
2
Share
More Forum Discussions

What are the consequences of clearing car fault codes with a computer?

Generally, there are no significant adverse consequences after clearing car fault codes with a computer. Below is relevant information about car fault codes: Temporary fault codes: Those that can be cleared on their own are temporary fault codes, which are faults detected momentarily during vehicle operation. These may be caused by rough road conditions or improper driver operation. Such fault codes will automatically clear once the vehicle condition returns to normal and can be cleared with a computer without causing any negative effects. Permanent faults: Generally, when a car is running, if certain sensor parameters exceed standard values, the ECU will identify them as faults, and corresponding fault codes will be stored. If it is a permanent fault, the decoder cannot clear it.
7
3
Share

What is the power of a car compressor?

The power of a car compressor is 0.3-0.5Mpa for low pressure and 1.6-1.8Mpa for high pressure. Function of car compressor: The core component of a car air conditioning system is the compressor, which is responsible for drawing in low-pressure gaseous refrigerant, compressing it into high-pressure gaseous refrigerant, and discharging it to provide the driving force for the circulation of the refrigerant. During the circulation process of the refrigerant, it changes from a gaseous state to a liquid state in the engine compartment, releasing heat in the process. Power introduction: The compressor can automatically adjust its power output based on the set temperature. The air conditioning control system does not collect temperature signals from the evaporator outlet but controls the compression ratio of the compressor based on pressure change signals in the air conditioning pipeline to automatically adjust the outlet temperature. Throughout the entire cooling process, the compressor remains operational, and the regulation of cooling intensity relies entirely on the pressure regulating valve installed inside the compressor.
18
3
Share

Can a Sedan Tow a Trailer on the Highway?

Can a Sedan Tow a Trailer on the Highway? In China, towing a trailer with a sedan is allowed on highways, but only for rescue vehicles. Regular vehicles are not permitted to tow trailers; rescue vehicles typically use flatbed tow trucks. When driving on the highway, vehicle owners must adhere to speed limits, ensuring they do not drive below the minimum speed limit or exceed the maximum speed limit. Before entering the highway, it is essential to check the tire pressure and inspect the tire surface for any damage. While driving on the highway, maintain a sufficient safe distance from the vehicle ahead, increasing this distance as your speed increases. If driving on the highway at night, you may use high beams because highways have median barriers that prevent high beams from affecting the vision of oncoming drivers. However, if you are close to the vehicle in front, it is advisable to switch off the high beams to avoid impairing the visibility of the driver ahead.
9
0
Share

Should You Shift to Neutral When Parking on a Slope?

Parking on a slope does not require shifting to neutral. Below is relevant information about parking an automatic transmission vehicle: 1. Parking Procedure: The correct parking procedure involves first pressing the brake, then shifting from D (Drive) to N (Neutral), followed by engaging the mechanical handbrake or electronic parking brake. This step ensures that all the force is borne by the handbrake. Then, shift from N to P (Park), and finally turn off the engine. This is the correct parking procedure. 2. Parking on a Slope: When parking on a slope, it is even more important to follow the above sequence of operations. If you shift directly from D to P when parking on a slope, it can cause significant damage to the transmission because the transmission's locking mechanism will bear a great deal of force.
2
0
Share

What Happens If You Don't Engage the Parking Brake in a Car?

If the parking brake is not engaged in a car, the vehicle may roll backward, which can easily lead to accidents. In such situations, the driver's focus is on pressing the accelerator and releasing the clutch, often neglecting the foot brake, causing the car to slide backward. Additionally, the constant honking from vehicles behind adds to the driver's stress. In a panic, lifting the clutch may cause the car to stall and rapidly roll backward, potentially colliding with the vehicle behind. Emergency measures: Whenever a car is stuck on a slope and starts rolling backward, the driver's first action should be to stay calm and avoid panic. Quickly press the foot brake to stop the car, then gently engage the parking brake and slowly release the foot brake. It's best to keep the foot on the foot brake until confirming that the parking brake is securely engaged before releasing the foot brake.
15
5
Share

What is the freezing point of gasoline?

Typically, the freezing point of regular gasoline is minus seventy-five degrees, while pure ethanol gasoline has a freezing point of minus one hundred and seventeen degrees. The concept, composition, and selection criteria of gasoline grades are as follows: Concept of gasoline grades: It refers to the ratio of the actual anti-knock performance of gasoline to that of standard gasoline. The higher the grade, the stronger the anti-knock performance. Composition of gasoline: Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, with an octane rating of 100; n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, with an octane rating of 0. Selection criteria for gasoline grades: The primary criterion for selecting gasoline grades for a car is the engine's compression ratio, which is also a core energy-saving indicator of modern cars.
1
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.