What is the Difference Between 5w20 and 5w30?

1 Answers
OHarmony
07/25/25 4:06am
Here are the detailed differences between 5w20 and 5w30 engine oils: 1. Fuel consumption: 20-grade oil offers better fuel economy, is more fuel-efficient, but comes at a higher price. 5W30 oil has higher viscosity limits, resulting in greater engine operating resistance, higher fuel consumption, but better sealing performance and quieter engine operation. 2. Low-temperature performance: Both 5W20 and 5W30 oils have the same low-temperature performance. The difference lies in the number after the W, which represents the oil's high-temperature viscosity. The larger the number, the higher the viscosity. 3. Oil selection: When choosing oil viscosity, consider the age of the vehicle. Newer vehicles with smaller engine component clearances should use lower viscosity oil, while vehicles with significant engine wear should opt for higher viscosity oil.
Was this review help?
5
5
Share
More Forum Discussions

What are the requirements for upgrading from B2 to A1?

The requirements for upgrading from B2 to A1: 1. The applicant must be between 26 and 50 years old; 2. The applicant must have held a B2 driver's license for more than five years and must not have accumulated 12 or more penalty points in any of the five consecutive scoring cycles prior to the application. The A1 driver's license allows the holder to drive large buses that can carry more than 20 passengers, as well as passenger vehicles with a body length exceeding 6 meters. Other vehicle types that can be driven with an A1 license include: A3 city buses, B1 medium-sized buses, B2 large trucks, C1 small cars, C2 small automatic transmission cars, C3 low-speed trucks, C4 three-wheeled cars, and M wheeled self-propelled machinery. Only an A2 license permits driving fully-trailed and semi-trailed tractors, which the A1 license does not cover.
16
1
Share

Where is the Elantra defogger switch located?

The Elantra defogger switch is located on the center console. Below is an introduction to the Elantra: 1. Configuration: In addition to L2+ level assisted driving and some active safety features, it includes front seat heating, wireless phone charging, steering wheel heating, automatic air conditioning, full-speed adaptive cruise control, and more. There are also configurations for remote control and phone connectivity. 2. Power: The new Elantra is equipped with a 1.5L naturally aspirated engine, with a maximum power of 84.5kW (115Ps)/6300rpm and a maximum torque of 143.9N·m/4500rpm. The Sylphy is equipped with a 1.6L naturally aspirated engine, with a maximum power of 99kW (135Ps)/6300rpm and a maximum torque of 159N·m/4000rpm.
7
2
Share

What Causes the Steering Wheel to Be Misaligned After Driving Over a Pothole?

When a car drives over a pothole at high speed, severe jolts and impacts can cause deformation or damage to the chassis components, leading to misalignment of the steering wheel. If this issue is detected, it should be repaired promptly. Continuing to drive not only compromises safety but also accelerates wear and tear on tires and other chassis components. The most commonly damaged parts include: 1. Deformation of the upper and lower control arms; 2. Misalignment or deformation of the steering linkage; 3. Deformation of the steering knuckle (commonly known as the "sheep horn"). Vehicle damage can be assessed through a four-wheel alignment test or by observing the extent of deformation.
11
3
Share

How much fuel does one bar on the Sylphy fuel gauge represent?

Sylphy's fuel gauge represents approximately 10 liters per bar. There are two types of automotive fuel gauges: analog and digital. Here are the specific details: 1. Analog: The amount of fuel is indicated by the position of a needle. The gauge is marked with two letters, E and F, where F stands for Full and E stands for Empty. When the fuel icon lights up, it indicates that the remaining fuel is low and needs to be refueled as soon as possible. 2. Digital: The remaining fuel is indicated by the number of illuminated bars. More illuminated bars mean sufficient fuel, while only 1-2 bars indicate low fuel levels that require timely refueling. Some digital fuel gauges also display the remaining driving range, but this should only be used as a reference.
7
0
Share

What temperature rating is used for car windshield washer fluid?

Car windshield washer fluid is generally divided into 0°C fluid for summer use and -20°C or -35°C fluid for winter use. Functions of windshield washer fluid: It has capabilities such as dirt removal, water repellency, antifreeze, antistatic, and corrosion prevention. It can effectively remove dust, lubricating oil, gasoline/diesel residues, polishing wax residue, tree sap, bird droppings, and insect residue on highways. It can quickly disperse rainwater on the windshield, preventing blurred vision for drivers during heavy rainfall. It can neutralize the electric charge generated by friction between the windshield, wipers, and substances in the air, enhancing the conductive effect on the glass surface to resist static electricity and prevent dirt adsorption caused by electric charge, which could affect visibility. Precautions for windshield washer fluid: In winter, be sure to completely drain the existing fluid before refilling with antifreeze windshield washer fluid.
8
3
Share

What is the VSV fault?

The VSV on a car indicates a problem with the engine power system, including excessive brake pad wear, lack of brake fluid, or brake pump air leakage. This situation requires professional inspection and repair at a repair shop or 4S shop. Definition of the VSV light: The VSV light on a car is a skid control fault light. Generally, if this light comes on, it means there is a problem with the brake system or the engine power system. Composition of the brake system: The brake system consists of a control system, a hydraulic system, and a booster system. The principle of the brake system is to create significant friction, converting the vehicle's kinetic energy into thermal energy. During acceleration, the car converts chemical energy into thermal and kinetic energy, and when braking, the brake system converts the car's kinetic energy into thermal energy, which is dissipated into the air.
6
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.