Do I need to change my car oil seasonally (winter and summer)?

In most cases, no, change the car oil according to the season in the traditional sense (separately “summer” and “winter” oil) It is no longer necessary. Modern engine oils are all-season. This means that the same oil is designed to work efficiently at both low temperatures in winter and high temperatures in summer.

All-season performance is achieved through the use of special additives and base oils that ensure optimal oil viscosity over a wide temperature range. This is reflected in the viscosity marking, for example, 5W-30 or 10W-40.

The first digit with the letter “W” (Winter) indicates the low–temperature properties of the oil, and the second digit indicates its viscosity at the operating temperature of the engine. Thus, one all-season oil combines the characteristics of “winter” and “summer” oils.