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What is the viscosity grade of motor oil?

5W-30, 15W-40, 10W-40... The viscosity grade of a motor oil indicates the lubricant’s level of fluidity and its efficiency at low and high temperatures.

What is the composition of motor oil?

Motor oil is derived from crude oil. How is it made and what additives are used?

What is the octane rating in gasoline?

Gasoline is the best-known fuel and has different properties that allow it to be the source of energy that runs the engine of your vehicle. 

When you should change the engine oil

The indication on the dashboard is not the only indicator for changing engine oil. There are several additional signs that we must pay attention to such as appearance and texture.