What Viscosity Grade of Engine Oil Should Be Used in Summer?
2 Answers
Automotive engine oil viscosity grades for summer use are: 20, 30, 40, 50. The higher the number, the greater the viscosity, and the higher the maximum applicable temperature. Classification of automotive engine oils: Automotive engine oils are specifically classified into 4 types for summer use, 6 types for winter use, and 16 types of all-season oils. There is also a type of all-season oil with the following grades: 5W/20, 5W/30, 5W/40, 5W/50, 10W/20, 10W/30, 10W/40, 10W/50, 15W/20, 15W/30, 15W/40, 15W/50, 20W/20, 20W/30, 20W/40, 20W/50. The smaller the number representing the winter part, and the larger the number representing the summer part, the higher the viscosity and the wider the applicable temperature range. All-season engine oils: Currently, multi-grade oils, which are widely used, are all-season engine oils. The number following the SAE grade on the oil indicates the minimum applicable temperature.
When it comes to oil viscosity grades for summer use, as someone with extensive driving experience, I find it quite important. The number like 30 in 5W-30 represents the high-temperature viscosity. In hot summers, it's better to choose a higher grade, such as 10W-40 or 15W-40. High temperatures can easily cause engine overheating, and oil that's too thin provides poor protection, potentially leading to noise or wear. I live in the south where temperatures can soar to 40°C. I used to use low-viscosity oil and felt the engine shaking during acceleration, but after switching to 10W-40, it ran much smoother. Don't forget to check the owner's manual for recommendations, as different car models have different requirements. Oil consumption is faster in summer, so I change it every three months and check the oil level to prevent shortages. Regular maintenance can save money by avoiding major repair costs. Overall, safe driving is fundamental—don't use an inappropriate viscosity grade just to save a bit on oil. I recommend choosing reputable oil brands for more reliable quality.
