What Causes Difficulty Engaging First Gear and Frequent Engagement of Third Gear?

What is the difference between 5W30 and 10W40 engine oil?

5W30 and 10W40 engine oils mainly differ in: 1. Applicable temperature range: The freezing point temperature corresponding to 5W30 oil is minus thirty degrees Celsius; the freezing point temperature corresponding to 10W40 oil is minus twenty degrees Celsius. 2. Oil viscosity: The high-temperature viscosity of 5W30 oil is 30; the high-temperature viscosity of 10W40 oil is 40. The performance characteristics of engine oil include: 1. Lubricity; 2. Low-temperature operability; 3. Viscosity-temperature characteristics. Engine oil grades are categorized as: 1. AB series: Gasoline and light-duty diesel engine oils; 2. C series: Catalyst-compatible engine oils; 3. E series: Heavy-duty diesel engine oils.

6

0

Share

What does 5w30 mean for engine oil?

In engine oil 5w30, the 5 represents resistance to external low temperatures of minus 30 degrees, W stands for winter suitability, and 30 indicates the kinematic viscosity standard at 100 degrees Celsius is 30. Engine oil, also known as motor lubricant, serves functions such as lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust and corrosion protection, and shock absorption for the engine. The roles of engine oil include: 1. Lubrication and wear reduction, forming an oil film between components through flow to reduce frictional resistance and minimize wear; 2. Cleaning effect, circulating within the engine to remove carbon deposits, oil sludge, and other contaminants produced by the engine; 3. Protective effect, utilizing its 'oiliness' to provide protection; 4. Auxiliary cooling, as the oil continuously circulates and flows during high-speed engine operation, it helps dissipate some of the engine's heat; 5. Shock absorption, the oil can bear part of the impact load transmitted by bearings and also provide a certain cushioning effect for impacts between components.

1

5

Share

Can You Still Drive with a Transmission Failure?

You cannot drive with a transmission failure. Continuing to drive will exacerbate the impact and friction between the damaged transmission gears, increase contamination of the transmission fluid, and cause fallen particles to damage other gears, leading to irreparable consequences. The transmission primarily refers to the vehicle's gearbox, which is divided into manual and automatic types. A manual transmission mainly consists of gears and shafts, achieving speed and torque variation through different gear combinations. An automatic transmission (AT) is composed of a torque converter, planetary gears, and a hydraulic control system, achieving speed and torque variation through hydraulic power transmission and gear combinations.

10

2

Share

What is the function of a spark plug?

The function of a spark plug is to generate an electric spark to ignite the gasoline in the engine cylinder. The structure of a spark plug consists of a slender metal electrode passing through a ceramic material with insulating properties. The lower part of the insulator is surrounded by a metal shell, which is screwed tightly onto the cylinder head with threads. A welded electrode at the bottom of this metal shell forms a grounding connection with the vehicle body. At the central end of this electrode, there must be a tiny discharge gap. High-voltage current from the distributor passes through this central electrode and discharges at the gap at the bottom. At this point, the spark plug functions to generate an electric spark and ignite the air-fuel mixture, providing the engine with power and output.

9

3

Share

What Causes Spark Plugs to Fail Easily?

Reasons why spark plugs fail easily: The fuel-air mixture in the car is too rich, causing unburned portions to accumulate and carbonize on the spark plug electrodes, leading to abnormal phenomena such as misfiring and damage. In such cases, the spark plugs need to be replaced promptly. Spark plugs ignite gasoline by generating sparks, working in coordination with the car engine's ignition and fuel supply systems to enable engine operation, significantly influencing the engine's performance. Spark plugs operate under harsh conditions of high temperature, high pressure, electrical stress, and chemical corrosion, requiring good insulation, strong corrosion resistance, and sufficient mechanical strength. Despite these requirements, failures are inevitable during use, making spark plugs one of the components with a higher failure rate in the ignition system.

17

1

Share

How Often Should Car Pistons Be Replaced?

Car pistons can last a lifetime without replacement unless they are damaged due to special malfunctions, such as running at high RPMs with insufficient engine oil, leading to excessive combustion and deformation of the pistons. Pistons are reciprocating components within the engine cylinder block, and their basic structure can be divided into the crown, head, and skirt. The piston crown is a major part of the combustion chamber, and its shape depends on the type of combustion chamber selected. Gasoline engines typically use flat-top pistons, which have the advantage of a smaller heat absorption area. Diesel engine pistons often feature various types of recesses on the crown, the specific shape, position, and size of which must align with the requirements for mixture formation and combustion in diesel engines.

3

4

Share

What Causes Difficulty Engaging First Gear and Frequent Engagement of Third Gear?

What is the difference between 5W30 and 10W40 engine oil?

What does 5w30 mean for engine oil?

Can You Still Drive with a Transmission Failure?

What is the function of a spark plug?

What Causes Spark Plugs to Fail Easily?

How Often Should Car Pistons Be Replaced?

Is It Normal for the Four Tires to Have Different Tire Pressures?

Do I Need to Make an Appointment to Register My Car at the DMV?

What is the difference between 5w30 and 5w40 engine oil?

What symptoms will appear if the knock sensor is broken?