The existence of Shell’s fake engine oil will indeed cause trouble to consumers, but it does not mean that there is a problem with the supply of real engine oil. Genuine engine oil brands usually have fixed sales channels, including car 4S stores, professional car repair shops and authorized dealers. Consumers can purchase authentic motor oil through these channels.

Shell fake engine oil may be sold through some informal channels. These fake engine oils may be sold through some markets, e-commerce platforms or individuals. In order to avoid buying fake engine oil, I recommend that consumers choose formal channels when purchasing engine oil and choose reputable dealers or direct stores. In addition, you can also pay attention to the following points to determine the authenticity of the engine oil:

1. Look at the physical characteristics: Real engine oil usually has professional packaging, including stickers, logos, product names, etc. on the bottle. If the packaging is obviously of poor quality or the labeling is unclear, it's probably fake oil.

2. Check the trademark logo: Regular engine oil will have a corresponding trademark logo, and you can check the authenticity through official channels. At the same time, you can observe the details of the trademark logo, such as fonts, lines, etc. Real engine oil is usually more neat and refined.

3. Look at the batch number and production date: Real motor oil will have the batch number and production date marked on the product bottle or packaging. You can check whether this information is consistent with the actual situation.

4. Look at the sales price: Motor oil with a price that is too low is likely to be fake, because the production of real motor oil requires costs. A price that is too low may indicate that it is adulterated with inferior ingredients.

If a consumer purchases suspicious engine oil, it is best to contact and report it to the relevant legal department or automobile manufacturer in a timely manner. At the same time, regular maintenance and oil changes on the vehicle can reduce the damage caused by fake oil to the vehicle.