What oil does the differential use? Comprehensive analysis of the selection and use of differential oil
The differential is an important component in the vehicle transmission system, which is responsible for adjusting the speed difference between left and right wheels to ensure the vehicle turns smoothly. The choice of differential oil (also known as gear oil) directly affects the performance and life of the differential. This article will combine popular topics and hot contents across the network for the past 10 days to analyze the selection criteria, recommended brands and common questions for differential oil.
1. The role and importance of differential oil
The main function of differential oil is to lubricate the gears, reduce friction, dissipate heat and prevent corrosion. If used improperly or poor oil quality, it may lead to increased noise from the differential, wear and even damage to the gear. Therefore, it is crucial to choose the right differential oil.
2. Classification and selection criteria for differential oil
Differential oil is mainly divided into the following categories:
| type | Features | Applicable car models |
|---|---|---|
| Mineral oil | Low price, but poor high temperature resistance and oxidation resistance | Older models or low-load vehicles |
| Semi-synthetic oil | Performance is between mineral oil and fully synthetic oil | Ordinary family car |
| Fully synthetic oil | High temperature resistance, strong oxidation resistance, long life | High performance or high load vehicle |
When selecting differential oil, the following standards must be referred to:
3. Recommended popular differential oil brands
According to the search data of the entire network in the past 10 days, the following differential oil brands have attracted much attention:
| brand | Product model | Features | Price range (yuan/L) |
|---|---|---|---|
| Mobil | Mobil 1 Synthetic Gear Lube 75W-90 | Fully synthetic, GL-5 standard, high temperature resistance | 100-150 |
| Shell | Spirax S6 G 75W-90 | Semi-synthetic, GL-5 standard, strong oxidation resistance | 80-120 |
| Castrol | Syntrax Limited Slip 75W-140 | Fully synthesized, suitable for limited-slip differentials | 120-180 |
| Great Wall | GL-5 80W-90 | Mineral oil, affordable | 40-60 |
4. Differential oil replacement cycle and precautions
The replacement cycle of differential oil varies depending on the model and usage conditions. It is generally recommended to replace it every 20,000-40,000 kilometers or every 2 years. Here are the precautions when replacing differential oil:
5. Frequently Asked Questions
1. Can differential oil and transmission oil be mixed?
cannot. Differential oil and transmission oil have different performance requirements, and mixing can lead to poor lubrication or damage to components.
2. How to determine whether the differential oil needs to be replaced?
If the differential noise occurs during the vehicle, shifting or the oil becomes black, it may be that the oil is aging and needs to be replaced in time.
3. How much differential oil is appropriate?
The vehicle manual shall prevail. Generally, the filling is only allowed until the fuel hole overflows.
Summarize
The choice of differential oil directly affects the performance and life of the vehicle's transmission system. It is recommended that car owners choose appropriate oil products according to the model and usage conditions, and regularly check and replace them. If you still have questions about differential oil, you can consult a professional technician or refer to the vehicle manual.
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