What is the difference between 5W and 10W motor oil?

1 Answers
LeMadelyn
07/30/25 9:21am
The main functions of motor oil are to reduce friction and wear between moving parts, and to remove sludge (one of the functions of dispersants) and varnish (cleaners) from the engine. The differences between 5W and 10W motor oil are as follows: 1. Different low-temperature performance: 5W has better low-temperature performance than 10W. If you are in a colder northern region, choose 5W or 0W. In southern regions, either 10W or 5W is suitable. 2. Different prices: 10W grade motor oil is generally cheaper than 5W. 3. Different low-temperature fluidity: The 'W' stands for winter, and the smaller the number before it, the better the low-temperature fluidity (oil thinning) of the motor oil. Therefore, 5W has better low-temperature fluidity than 10W. 4. Different protection capabilities for the engine during cold starts: 5W indicates that the motor oil can operate at a minimum temperature of -30 degrees Celsius, while 10W indicates a minimum operating temperature of -25 degrees Celsius.
Was this review help?
15
0
Share
More Forum Discussions

Can I Buy a Car in One Place and Register It in Another?

Buying a car in one place and registering it in another is possible. Below is the relevant information about changing the license plate in a different location: 1. Conditions: The owner of the vehicle must have their residence moved into the jurisdiction of the local vehicle management office, or when transferring the vehicle registration, the current owner must have their residence moved into the jurisdiction of the local vehicle management office. 2. Required Materials: For transferring the registration, provide proof and documentation of the vehicle ownership transfer, the vehicle registration certificate, the vehicle file, the original and a copy of the owner's identity proof, and if the owner's residence is moved into the city, provide legal proof and documentation.
17
2
Share

What is the official explanation for the whistling sound in the Nissan Sylphy CVT?

The whistling sound in the Nissan Sylphy CVT transmission is mainly caused by steel belt slippage. The manufacturer has acknowledged this as a common issue, and currently, there is no effective solution available. Below is an introduction to CVT-related content: 1. Gear shifting principle: This type of transmission is a continuously variable transmission (CVT), and its gear shifting principle differs from that of conventional transmissions. 2. Internal structure: The CVT transmission consists of two cone pulleys and a steel belt chain. 3. Working principle: The steel belt chain can move on the cone pulleys to achieve speed and torque variation. The CVT transmission relies on the friction between the steel belt chain and the cone pulleys to transmit power.
16
5
Share

What is the problem when there is abnormal noise from the brakes but it disappears after driving for two minutes with a warmed-up car?

The reason for abnormal noise from the brakes is the presence of foreign objects in the brake disc gap. Below are the specific causes and solutions: Foreign objects in the brake disc gap: Sometimes, hard substances like sand or stones can enter the gap between the brake disc and brake pads, causing abnormal noise. This usually occurs during the initial driving stage and can generally be ignored. After driving through water or off-road conditions like muddy roads, hard sand or stones may get into the gaps of the braking mechanism, causing jamming during braking system operation. When these particles move into the brake disc gap, they can lead to abnormal noise. Additionally, excessive wear on the brake disc or cracks in the brake pads, even if not severely worn, can also cause abnormal noise. Replacing a new brake disc: Abnormal noise from the brakes in a new car is normal and usually disappears after a running-in period of more than 200 kilometers, so there is no need to worry. Replacing new friction pads or a new brake disc may temporarily result in poor running-in with the friction pads, leading to abnormal noise.
5
4
Share

How long does it take to review the registration of a non-personal motor vehicle?

Registration review for a non-personal motor vehicle generally does not exceed 7 working days. After applying on the Traffic Management 12123 APP, manual review is still required. If you cannot wait this long, you can go to the vehicle management office for an in-person signing. The traffic management department will notify the owner of the review results via SMS or the APP. Matters to follow when registering a non-personal motor vehicle: 1. Only personal motor vehicles can be registered, and the vehicle to be bound must be a small car or a small new energy vehicle; 2. The same motor vehicle can be registered by up to 3 (including 3) non-owners at the same time; 3. The Traffic Management 12123 APP only allows the registration of one non-personal motor vehicle; 4. After successful registration, you can check the traffic violations recorded by the traffic technical monitoring equipment for the non-personal motor vehicle and can handle non-point or post-registration point violations for the registered non-personal motor vehicle, applicable to electronic monitoring violation records under the simplified procedure.
5
3
Share

What is the penalty for not registering a motorcycle color change?

If a motorcycle color change is not registered and is discovered, a fine of 200 yuan will be imposed without any deduction of points. According to Article 56 of the "Regulations on the Registration of Motor Vehicles," if the body color is changed without undergoing the required registration procedures, the public security traffic management department will issue a warning or impose a fine. The vehicle may also be impounded and required to revert to its original color. According to Article 6 of the "Road Traffic Safety Law," the following documents must be submitted when applying for a change in the body color of a motor vehicle: the "Application Form for Motor Vehicle Change Registration"; original and photocopies of the identity documents of the vehicle owner and agent; the original motor vehicle registration certificate; the original motor vehicle license; and payment of any fines before changing the vehicle color. According to Article 6 of Chapter 2 of the "Road Traffic Safety Law," if the color change area of a motor vehicle does not exceed 30%, no registration for the change is required. Conversely, if it exceeds 30%, the change must be registered and documented within 10 days after the color change. Precautions for vehicle color changes: Before changing the color of a motor vehicle, it is necessary to consult with the vehicle management office where the vehicle is registered to determine whether the region permits the use of film to change the vehicle color. If the region does not support this method, the registration process cannot be completed after the color change, and the film must be completely removed to restore the vehicle's original color. Additionally, according to Article 10 of the "Regulations on the Registration of Motor Vehicles," owners are no longer required to apply in advance to the vehicle management office. They can first change the vehicle color, install body kits, replace the engine, etc., and then apply for a change registration with the vehicle management office. According to Article 10, registered motor vehicles must apply for a change registration under the following circumstances: Change of body color. Replacement of the engine. Replacement of the body or frame. Replacement of the entire vehicle due to quality issues. Change from commercial to non-commercial use or vice versa. Change of the vehicle owner's residence outside or within the jurisdiction of the vehicle management office. Furthermore, according to Article 15 of the "Road Traffic Safety Law of the People's Republic of China": Police cars, fire trucks, ambulances, and engineering rescue vehicles must be painted with designated patterns and equipped with alarms and signal lights as required. Other motor vehicles are prohibited from painting, installing, or using patterns, alarms, or signal lights that are specific to or resemble those of the aforementioned vehicles.
10
1
Share

How Many Days Are Toll-Free During National Day?

During National Day, the expressway is toll-free for 8 days. According to the Mid-Autumn Festival and National Day expressway regulations, the toll-free period is from 00:00 on October 1st to 24:00 on October 8th, totaling 8 days. The toll-free period starts at 00:00 on the first day of the National Day and Mid-Autumn Festival holiday and ends at 24:00 on the last day of the holiday. For ordinary roads, the toll-free time is determined by when the vehicle passes through the toll lane of the toll station, while for expressways, it is determined by when the vehicle exits the toll lane. The vehicles eligible for toll-free expressway travel are passenger vehicles with 7 seats or fewer (including 7 seats) that travel on toll roads, including motorcycles allowed on ordinary toll roads.
11
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.