While we all buy motor oil for our car, we should really know which one to pick after thoroughly researching what’s best for the car. It’s not just the brand and the viscosity grade that we want, we should really be looking for what’s known as the API (American Petroleum Institute) donut symbol. This article examines the various factors that need to be assessed while picking out the motor oil for your car:

Certified Oil
It is a certificate provided by the American Petroleum Institute for testing the oil to meet the standards of API. You will find the symbol on every container of reputable motor oil.

Viscosity
There are two types of oils available the single viscosity oil and the multi viscosity oil. The lower the number the thinner the oil and more easily it flows. the higher the number the thicker the oil and the flow is very slow. Here’s a quick explanation of what these numbers appear to be when we see them in the front of oil cans, for example 5W-30. There are two sets of numbers here. 30 relates to how the oil performs at 100 degrees centigrade and 5W relates to how the oil performs when the oil is cool. It is an important component of oil change to understand.

Types of Oil
The premium conventional oil is preferred by most for the light- duty vehicles on road, particularly for lower temperature. Full synthetic oil is for high tech engines like Audi and Mercedes Benz which is superior and gives long lasting performance. These types of oils are very expensive and may not be required for your car engine. In fact, some car engines may not have certain features required for synthetic oil.