The Difference Between Synthetic and Semi-Synthetic Motor Oil

Introduction:

Have you ever encountered the terms “synthetic” and “semi-synthetic” when changing your car’s engine oil? What do these terms mean? What’s the difference between synthetic and semi-synthetic motor oil?

Understanding the Basics:

As the names suggest, conventional motor oil is a standard product with necessary additives to support the internal combustion engine. However, things get a bit more complex when it comes to synthetic and semi-synthetic motor oils.

Synthetic Motor Oil:

Despite its name, synthetic oil is derived from crude oil. The main difference between synthetic and conventional oil lies in the extent of refining. Synthetic oil undergoes a more extensive refining process, resulting in better protection for its constituent molecules. Additionally, this type of oil contains more additives for improved performance in internal combustion engines. According to some reports, these oils typically need to be changed between 16,000 and 24,000 kilometers, although most mechanics and experts recommend shorter intervals. Synthetic motor oil is more expensive than conventional types.

Semi-Synthetic Motor Oil:

Semi-synthetic motor oil is a blend of mineral (natural) and synthetic oils with its specific additives. This type of oil is also suitable for car engines and is more affordable. Although semi-synthetic oils are generally cheaper than synthetic ones, they offer lower performance and shorter lifespans. For this reason, it’s recommended to change semi-synthetic oils every 8,000 to 12,000 kilometers, although changing them sooner is advisable. However, semi-synthetic oils are still a better option than conventional mineral-based oils as they extend the life of engine components.