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What are the effects of not changing transmission oil for a long time?

1 Answers

KinsleyMarie

07/29/25 1:44am

Failure to change transmission oil can lead to issues such as oil inefficiency and deterioration, impaired heat dissipation, and damage to components. Therefore, vehicle owners should replace the transmission oil as required. The primary function of engine oil is to lubricate the engine. If not changed for an extended period, the oil can become ineffective and deteriorate, exacerbating engine wear. In severe cases, this can lead to engine cylinder scoring. The cleaning role of engine oil is compromised if the oil is problematic, making it unable to effectively remove impurities (such as carbon deposits and metal particles) generated on the surfaces of working parts. Over time, this can affect heat dissipation and lubrication, and in severe cases, clog oil passages, leading to engine damage or even complete failure. The cooling efficiency of the oil diminishes, adversely affecting certain automotive components, especially those with relatively fragile structures. Prolonged use under such conditions can easily cause damage or even complete burnout. Below are the functions of transmission oil: The main role of transmission oil is to keep the gear system clean and to lubricate the transmission components, thereby extending their lifespan. Transmission oil serves to clean, lubricate, cool, and seal the transmission. Due to the specific operating conditions within the transmission, the quality of the oil has a limited shelf life. Over time, its performance degrades, and it accumulates more impurities, accelerating the wear of transmission components and leading to premature failures or higher failure rates.

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Which system does the gear shift mechanism belong to?

The gear shift mechanism belongs to the gear shift control system. To prevent accidentally engaging reverse gear while the vehicle is moving forward, which could cause damage to components, the control mechanism is equipped with a reverse gear lock device. The principle of this mechanism: When the transmission is in neutral, all the grooves are aligned in the horizontal plane, and the spherical head at the lower end of the fork-shaped shifting lever extends into these grooves. During gear selection, the gear lever can be swung laterally around its central spherical pivot, causing its lower end to push the fork-shaped shifting lever to rotate around the axis of the shift shaft. This aligns the spherical head at the lower end of the fork-shaped shifting lever with the groove of the shifting block corresponding to the selected gear. Then, by swinging the gear lever longitudinally, the shift fork shaft and shift fork are driven forward or backward to engage the gear. Transmission control mechanism: After engaging a gear, the coupling sleeve should fully mesh with the coupling gear ring (or when shifting with a sliding gear, the full tooth length should engage). Under conditions such as vibration, the control mechanism should ensure that the transmission does not engage or disengage gears on its own. For this purpose, a self-locking device is installed in the control mechanism.

What Causes Frequent Engine Stalling?

Automatic transmission vehicles do not easily experience stalling, whereas manual transmission vehicles may frequently stall due to lower driving proficiency. However, it is not impossible for automatic transmission vehicles to stall; the primary reason is the use of low-quality fuel, which leads to engine carbon buildup and subsequent stalling. Introduction to Stalling: Stalling, also known as flameout, occurs when the reactor is operating at a significant reaction rate. If the temperature at the feed inlet is reduced to the lower limit of the multiplicity region, the reaction rate suddenly drops significantly, and the reaction basically stops. Use Higher Octane Fuel: It is best to refuel at reputable, larger gas stations with higher octane fuel. Although it may be more expensive, the quality of the gasoline is better.

What is the difference between aspect ratios 50 and 45?

The difference is not significant. A lower aspect ratio means the tire has better grip, clearer road feedback, stronger handling stability, and better acceleration performance. However, low aspect ratio tires have poorer comfort and are more suitable for sports models. They require higher road conditions and have relatively higher fuel consumption. High aspect ratio: Long sidewalls provide good vibration absorption and cushioning effects, offering excellent comfort. However, they have poor road feedback and weak lateral resistance during turns, resulting in poor handling. Do not change the aspect ratio: It is recommended not to alter the tire's aspect ratio, as changing the tire specifications can cause various issues, such as ABS failure, inaccurate odometer readings, transmission problems, and in severe cases, it may affect driving safety.

Will Rear Tire Wear Cause Vibration?

Rear tire wear can cause vibration. Uneven tire wear or irregular tread wear indicates the need for a four-wheel alignment. Front Wheel Alignment: The installation of a car's steering wheels, steering knuckles, and front axle has specific relative positions. This installation with defined relative positions is called steering wheel alignment, also known as front wheel alignment. Rear Wheel Alignment: Similarly, the two rear wheels also have specific relative positions in their installation with the rear axle, known as rear wheel alignment. Four-Wheel Alignment: Four-wheel alignment is based on the four-wheel parameters of the vehicle. Adjustments are made to ensure optimal driving performance and reliability. If the angle at which the wheels contact the ground is incorrect, it can directly affect tire lifespan. Adjusting the angle between the tires and the ground can prevent body vibration and irregular wear.

Why does the steering wheel make noise when the air conditioner is on and the car is stuck in traffic?

Reasons for the noise from the steering wheel when the air conditioner is on and the car is stuck in traffic: friction noise from the steering wheel horn electrode, noise from the steering wheel return lever. Friction noise from the steering wheel horn electrode: This type of noise is common in cars without airbags, where there is only a horn button on the steering wheel. In this case, the fixed electrode needs to be removed, and the contact point should be polished to make the contact surface smooth, which can eliminate the noise. Noise from the steering wheel return lever: This is not a malfunction, and experienced drivers are familiar with it. The turn signal has an automatic return function. When the turn signal is turned on and the steering wheel is turned, the steering column hitting the return lever will produce a clicking sound, which is not a malfunction.

Why Can Encumbered Vehicles That Cannot Be Transferred Still Be Sold?

Encumbered vehicles that cannot be transferred are generally not allowed to be bought or sold, but some individuals still privately sell vehicles that cannot be transferred. Buyers should thoroughly inspect the relevant vehicle documentation when purchasing a car to avoid acquiring such vehicles. Introduction to Vehicle Transfer: Vehicle transfer refers to the change of ownership registration. When purchasing a used car, besides checking the vehicle condition, the most important step is completing the transfer procedures. Principle of Vehicle Transfer: Every vehicle has a fixed registration record, which primarily documents the owner's information, address, and relevant vehicle parameters. When issues exist with a vehicle—such as involvement in accidents, failure to undergo annual inspections, being stolen, or being smuggled—it cannot be transferred through normal procedures.

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