In the crankcase
In the crankcase of a vehicle engine, motor oil lubricates rotating or sliding surfaces between the crankshaft journal bearings (main bearings and big-end bearings), and rods connecting the pistons to the crankshaft. The oil collects in an oil pan, or sump, at the bottom of the crankcase. In some small engines such as lawn mower engines, dippers on the bottoms of connecting rods dip into the oil at the bottom and splash it around the crankcase as needed to lubricate parts inside. In modern vehicle engines, the oil pump takes oil from the oil pan and sends it through the oil filter into oil galleries, from which the oil lubricates the main bearings holding the crankshaft up at the main journals and camshaft bearings operating the valves. In typical modern vehicles, oil pressure-fed from the oil galleries to the main bearings enters holes in the main journals of the crankshaft. From these holes in the main journals, the oil moves through passageways inside the crankshaft to exit holes in the rod journals to lubricate the rod bearings and connecting rods. Some simpler designs relied on these rapidly moving parts to splash and lubricate the contacting surfaces between the piston rings and interior surfaces of the cylinders. However, in modern designs, there are also passageways through the rods which carry oil from the rod bearings to the rod-piston connections and lubricate the contacting surfaces between the piston rings and interior surfaces of the cylinders. This oil film also serves as a seal between the piston rings and cylinder walls to separate the combustion chamber in the cylinder head from the crankcase. The oil then drips back down into the oil pan.45
Motor oil may also serve as a cooling agent. In some constructions oil is sprayed through a nozzle inside the crankcase onto the piston to provide cooling of specific parts that undergo high temperature strain. On the other hand, the thermal capacity of the oil pool has to be filled, i.e. the oil has to reach its designed temperature range before it can protect the engine under high load. This typically takes longer than heating the main cooling agent ? water or mixtures thereof ? up to its operating temperature. In order to inform the driver about the oil temperature, some older and most high performance or racing engines feature an oil thermometer.
Due to its high viscosity, motor oil is not always the preferred oil for certain applications. Some applications make use of lighter products such as WD-40, when a lighter oil is desired, or honing oil if the desired viscosity needs to be mid-range.6
Sudden servicing cars
Very often it happens that entrepreneurs engaged in conducting business in servicing cars decide to start cooperation with the insurer. In this case, they can significantly increase the number of its customers, and the insurer benefits from this by finding the point, which may redirect injured drivers. You have to admit, however, that such work may require, however, significant effort on the part of mechanics and auto electricians, because often repair the car, which is subject to insurance is sudden. Polish roads are often extremely well to many accidents, and then repair the damaged car can be really difficult to carry out.
How to care for your car?
Historically, the car was a mostly a sign of prestige and status of the property owners. Today the car is primarily practical importance - we use it every day commuting to work, shopping or drive children to school or extracurricular activities. But in order to be able to enjoy the use of the car for many years, it is necessary to take care of him. Changing the oil on time, brake pads and other wearing parts during normal operation despite appearances, can greatly extend the life of the car. It should also be remembered that such regular maintenance is also the issue of safety of the driver and passengers, so it can not be taken lightly and put off.