Why it is important for the correct engine oil AUDI A4 Allroad?

The correct engine oil is important for proper performance, so i and a long durability and reliability of the car.
The correct oil namely ensures smooth running of the engine. Oil creates between the mechanical parts of the layer and so prevents the parts to each other directly to spawn and opotřebovávali and protects the engine.
In addition, the oil keeps the vehicle engine AUDI A4 Allroad from dirt and oxidation. Just depends on oil. Oil is produced in different viskozitách. Viscosity is a measure of the internal friction. What is the oil heat, this is the internal friction of the higher rate. For comparison-such as honey has a higher viscosity than water. Viscosity directly depends on the ambient and indoor temperatures and must correspond to a specific engine. The viscosity of the oil to find out directly from the designation. Oils are referred to as 5W-30. The first number indicates the viscosity of a cold, which indicates the following letter(W=WINTER).The first number is lower, the oil less viscous. Lower viscosity cold helps the engines better start in cold environments, because it creates less resistance. The second number indicates the viscosity at high temperatures. This, again, must meet the requirements of your engine.

Mineral and synthetic oils are suitable for AUDI A4 Allroad?

There are mineral, partially synthetic and fully synthetic oil. Mineral oils are made from crude oil, which is industrially processed and deprived of impurities and unwanted components such as waxes. Synthetic oils are made more complex chemical process that ensures their purity. Because synthetic oil better protects the engine, particularly when starting, when parts are most stressed. They are also more resistant to heat and are better protected against oxidation. When you move from the nesyntetického to the synthetic oil is, however, in older cars must consider the condition of the engine-synthetic oil better dissolves and can lead to a blockage of the oil filter and Lube the channels and by seizing the engine. Servisovanému the car regularly, which comply with the intervals of the exchange of oil and filters, and use high quality oils, however, there is no such risk.