What is motor oil used for?

5W30 Oil

Every engine needs oil to run properly. In fact, oil is an essential element for an engine. Whether synthetic, semi-synthetic or mineral, motor oil plays many roles. What are the goals and benefits?

What is motor oil for?

Engine oil plays many roles in keeping an engine running properly over time. Here are the main ones:


The main role of oil is to lubricate the engine parts, which are in constant friction. So it reduces friction, which tends to increase wear on parts.


The energy lost through combustion and the friction between mechanical parts causes the engine temperature to rise. Partial lubrication by the engine oil helps to dissipate heat through the lubrication circuit. It is a supplement to the coolant, which can only cool certain parts of the engine.


Although less well known, the cleaning power of motor oil is fundamental. Microscopic deposits accumulate in the engine and remain in suspension. They may consist of dust or combustion residues. Without engine oil, the residue would clog the engine and reduce performance. The flow of oil continuously carries these impurities to the oil filter, where they are collected.

Corrosion Protection

Burning fuel produces corrosive acid that can damage metal parts in the engine. The additives that are added to modern motor oils slow down corrosion. Nevertheless, over time and in contact with oxygen, motor oil can oxidize and no longer play its anti-corrosive role. Therefore, oil must be changed regularly.


Oil also improves engine sealing, and more specifically the sealing of pistons and cylinders. A protective layer is applied between the various parts that seals any openings.

Buy motor oil

To ensure that oil can really fulfill all its functions, the level must be checked regularly to change the oil at the right time. Overused oil no longer plays a role, which is detrimental to the general condition of the engine and its components. You can buy motor oil at Solution Oil.