At the moment, synthetic, semi-synthetic and mineral motor oils are presented on the market, while only the first two are most in demand among motorists. How do they differ from each other and what should you choose?
To obtain synthetic oils, manufacturers use a complex chemical process, during which an equally complex molecular structure is formed. The resulting lubricant is good in that it does not interact with metal and rubber in any way, and also does not undergo oxidation.
Synthetics can retain their properties for a long time, while the presence of various additives in its composition makes it possible to avoid the appearance of carbon deposits and deposits on the surfaces of the power unit.
This engine oil has a stable viscosity over a wide temperature range, which makes it easier to start the engine even in severe frosts. In addition, its use contributes to a reduction in fuel consumption.
In general, the advantages of synthetics are obvious, and there is perhaps only one disadvantage, but significant – it is a very high price.
This type is obtained by mixing synthetic and mineral bases. Depending on the manufacturer, semi-synthetics can contain about 40-50% synthetic oil and 50-60% mineral oil. It also contains additives, but they are less effective here.
In terms of viscosity and level of protection, semisynthetics are noticeably inferior to synthetics. Such oil remains stable in a narrower temperature range and often begins to thicken already at -10 degrees Celsius.
In addition, it is susceptible to oxidation, but motorists are ready to put up with these shortcomings, since its price is 2-2.5 times lower than the same synthetics.
What to choose in the end?
Synthetics are better suited for use in premium vehicles. The latter are mostly equipped with powerful engines, which just need maximum protection. But in budget cars (especially domestic production) – it is already economically impractical to fill in such oil.
For owners of cars with modern low-volume turbo engines, the question of choosing an oil is not at all worth it – such power units are designed exclusively for “refueling” with synthetics.
When to change?
Note that it is not only important for a car owner to choose the oil that is optimal for his car, but also to change it regularly. Most car manufacturers recommend doing this every 10-12 thousand kilometers, while experienced car service technicians consider the optimal oil change interval to be every 7,000 to 8,000 kilometers.
Unfortunately, in order to save money, many drivers often continue to drive on old oil even after the specified runs, which is fraught with additional engine wear and even serious damage.