Motor oils ensure that car engines work efficiently and at optimum levels by lubricating parts of the engine. However, finding the right motor oil can be an uphill task if you have never changed your oil before. This is because you will need to find the right viscosity for your car engine before buying the new motor oil.
The typical motor oil is normally designated as 10W-30. The number before "W" shows the viscosity of the oil when the engine is cold.