Where can I see that the engine oil is low-ash?

[VanRuby]

Use C-series certified low-ash engine oil. Here are specific details about low-ash engine oil: 1. Introduction to low-ash: Low-ash is generated by the combustion of certain additives in engine oil. Some of these ash deposits accumulate inside the engine, forming what car enthusiasts commonly refer to as "carbon deposits." Therefore, you can simply consider low-ash engine oil as producing fewer carbon deposits. 2. Key points: It's important to note that the current engine oil market is quite mixed. Many sellers, in order to boost sales, will privately label their oil bottles with API SP-grade standards without actually obtaining the relevant certification. Therefore, when selecting low-ash engine oil, always purchase well-known brands and choose products that have official certification and can be verified on the official API website. This will effectively help you avoid counterfeit or substandard engine oil products.