WHAT IS ENGINE OIL MADE OF?
The different types of engine lubricants consist of:
- Base oil (solvent with lubricating properties inside which the additives are dissolved) can be of mineral origin, deriving from the distillation of petroleum, synthetic, deriving from industrial chemical synthesis processes or from the strong treatment of products derived from the distillation of oil , regenerated, derives from the industrial treatment of waste oils.
- Additive packages, a set of chemicals necessary to give lubricant performance and determine its specifications (API, ACEA, Builders, etc.).
- Improvers of rheological characteristics, they are substances that act on the lubricant flow characteristics, allowing a good fluidity at low temperature (facilitating the cold engine starting) and at the same time a suitable high temperature viscosity (fundamental requirement for an effective lubrication and protection of the engine in operation). These substances are generally polymers capable of increasing the viscosity index so as to counteract the effect of the decrease in viscosity with increasing temperature. Other substances such as the pour point improvers, are able to allow the oil to flow at low temperature, inhibiting freezing.
The elements listed above make up the finished engine oil, but do not certify its quality.
In order to obtain a high quality engine oil it will be necessary to know how to choose the best quality elements and mix them in the specific doses in relation to the use to which the oil is destined.
WHAT ARE THE ADDITIVES USED IN MOTOR OILS FOR?
- Make engine oil suitable for specific applications
- They act on the destructive processes caused by combustion, rust / corrosion, deposits / dirt
- Extend the life of the lubricant by counteracting degradation processes such as contamination, acidification, thermal oxidation, soot / sludge contamination
- They improve specific physical properties of motor oil such as anti-foaming properties and pour point
WHAT IS THE VISCOSITY OF AN ENGINE OIL?
Viscosity is one of the most important characteristics for a car or motorcycle engine oil :
- the viscosity of a fluid measures its resistance to sliding, and represents its internal friction;
- the viscosity changes with the variation of temperature and pressure;