best oil for Daewoo Positive Crankcase Ventilation
Motor oil is a lubricant used in internal combustion engines, which power cars, motorcycles, lawnmowers, engine-generators, and many other machines. In engines, there are parts which move against each other, and the friction wastes otherwise useful power by converting the kinetic energy to heat. It also wears away those parts, which could lead to lower efficiency and degradation of the engine. This increases fuel consumption, decreases power output, and can lead to engine failure.
Lubricating oil creates a separating film between surfaces of adjacent moving parts to minimize direct contact between them, decreasing heat caused by friction and reducing wear, thus protecting the engine. In use, motor oil transfers heat through convection as it flows through the engine by means of air flow over the surface of the oil pan, an oil cooler and through the buildup of oil gases evacuated by the Positive Crankcase Ventilation (PCV) system.
In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 °C (320 °F). In diesel engines the top ring can expose the oil to temperatures over 315 °C (600 °F). Motor oils with higher viscosity indices thin less at these higher temperatures.
Coating metal parts with oil also keeps them from being exposed to oxygen, inhibiting oxidation at elevated operating temperatures preventing rust or corrosion. Corrosion inhibitors may also be added to the motor oil. Many motor oils also have detergents and dispersants added to help keep the engine clean and minimize oil sludge build-up. The oil is able to trap soot from combustion in itself, rather than leaving it deposited on the internal surfaces. It is a combination of this, and some singeing that turns used oil black after some running.
Rubbing of metal engine parts inevitably produces some microscopic metallic particles from the wearing of the surfaces. Such particles could circulate in the oil and grind against moving parts, causing wear. Because particles accumulate in the oil, it is typically circulated through an oil filter to remove harmful particles. An oil pump, a vane or gear pump powered by the engine, pumps the oil throughout the engine, including the oil filter. Oil filters can be a full flow or bypass type.
Źródło: https://en.wikipedia.org/wiki/Motor_oil
Preparation of a sports car to participate in the races
Many drivers fascinated by this, how are designed sports cars. Indeed, the construction of such car is very precise and requires a vast knowledge in the field of automotive. The task of designers is to provide drivers with such equipment, which allows for a very fast ride in variable and difficult conditions. Maintenance of sports cars is done sometimes for such reasons with which ordinary driver radziliby themselves, but sports cars have such a structure, it is difficult to do anything with them yourself, otherwise when it comes to the race that the service was done quickly. A major role in sports cars also play a motor oil that protect the engine while working under difficult conditions.
How to find trustworthy auto repair shop?
Defects or minor failures occur in every car, and this is due to its operation. It would seem that the older the car, the more trouble, however, and the latest models can sometimes give bone its owner. In such a situation, there is nothing else to look for a mechanic who not only repair the vehicle, but the occasion does not demand for the service a lot of money. The cost will depend on how large the scope of work will need to be carried out and whether it is necessary to buy spare parts. Surely every driver wants to give up your car in the best possible hands, so it is worth looking mechanics guided by the opinion of customers who have already benefited from its services and are happy with the result.