What are the properties of a good engine oil? And what functions the motor oil performs in the work of the car. And where can you get cash for cars oshawa?
Naturally, every owner is interested in keeping their car in excellent condition for as long as possible. This desire should be supported by a responsible attitude of the car owner to his car. The quality and regularity of car maintenance plays a decisive role in the trouble-free performance of a car for many years.
Last but not least the quality of lubricants and consumables used plays a major role in the maintenance of your vehicle. It is essential that all the parts to be lubricated with the proper oil in order to ensure the longest possible service life. We can responsibly declare: you should not save money on oil! In order to avoid services of specialists, it is necessary to know a few important details, namely to make a mini-review of engine oils.
If oil is not carefully chosen, of inadequate quality or characteristics, then, not exclude such troubles as increased engine wear, scuffing, seizure of parts, corking of piston rings and diesel injectors, clogging of oil channels and filters, a large formation of carbon deposits, rapid destruction of rubber parts.
What should you know about engine oil in order to avoid these troubles?
Everyone knows that motor oil is made from petroleum products. The first semblance of lubricants appeared more than six thousand years ago. It was then, according to the theory of historians, that the wheel was invented, followed by other mechanisms suitable for agriculture and everyday life. Even primitive people understood that a lubricant was needed for parts that interacted with each other. It was oil that was known to man at the time as a lubricant. But back then it was only used in its pure form. Much later, people learned to refine oil, but even then they used only kerosene, and the remaining valuable fuel oil was used just as fuel.
But technology has improved, and fuel oil was separated into components – fractions, in order to separate these fractions into mineral or petroleum oils.
A modern car engine is faced with very high loads, both mechanical and thermal, in its daily work. Consequently, the engine oil should also have the appropriate characteristics. The quality of engine oils for modern cars must be perfect. To obtain the highest performance characteristics, special elements are added to motor oil, the so-called additives, which improve the properties of the motor oil. In automobile oils of well-known manufacturers the number of additives exceeds a dozen. For example, anti-wear compositions – they reduce the wear of rubbing parts of the engine by several percent. There are detergent additives that prevent “varnish” from settling on different parts of parts, etc.
For the correct choice of engine oil, it is necessary to know that the oil must ha
ve two, opposite properties:
Flow well – penetrating through the system of the thinnest channels at all temperatures, including winter, after a “night” parking at “minus” 30 or 40, when everything “flowing” tends to turn into “shoe polish”. The presence of oil in the engine during the cold start is vital, because after the long parking it tends to drain completely and probably there will appear destructive scuffing in case of turning the engine “dry”.
Adhering to the metal surface – unlike the ability to leak, maintaining this prop
erty is especially important at ultra-high temperatures at the peak of engine loads, operated in the summer heat. Oil heated to the limit tends to go to the most liquid and even vaporous form, losing the ability to stay on the surface of rubbing parts in the form of a microfilm.
Engine oil has to be as liquid as possible to perform the first property, and as thick as possible to perform the second. The problem is solved either by using different properties of “winter” and “summer” oils or by using thickening additives – viscosity modifiers. They have made it possible to widely introduce all-season compositions. The essence of their action is that they “do not work” at low temperatures, keeping the original degree of oil fluidity, but they thicken it at higher temperatures, providing the desired compromise.
If you count all the requirements for engine oils, their number will exceed fifty. True, many requirements are dictated by environmental considerations and are not essential to engine longevity.
THE MOST IMPORTANT REQUIREMENTS FOR ENGINE OIL:
Engine oil must have high lubricating properties and thus provide maximum friction reduction and wear reduction;
An important function of engine oil is the ability to clean the engine of wear products, carbon deposits and other oil-soluble particles. To do this, special additives are added to motor oil to coat the dirt particles and keep them from sticking together in large clumps. The contaminants are suspended in the engine oil, which allows them to easily get into the oil filter and settle on its filter element;
There is always water vapor inside an engine and it condenses on metal surfaces and causes corrosion. Corrosion protection is another important function of engine oil;
Due to the fact that fuel contains sulfur, acid is formed during combustion. Engine oil is also responsible for neutralizing this acid;
Many engine parts are exposed to high thermal loads. They are protected from overheating by the engine oil, which in this case acts as a coolant;
Engine oil must seal the gap between the cylinder surfaces and pistons; Stopping the engine immediately after an active drive causes a rapid increase in the thermal load on the main parts of the power unit.