The friction law cannot be bypassed, despite constant perfection of technologies of metal processing and development of new types of lubricants.
For example, the operating surfaces of the indigenous and connecting rod bearings of a crankshaft, and the inner part of cylinder liners, at the initial moment of operation of the engine is far from perfect. After the proper break-in of their surface lapped and polished to a mirror. In case of disregard of the rules primary use of the vehicle they will be rough, with numerous grooves and burrs.
The rolling of the vehicle is in a special mode of operation in the first 2-3 thousand kilometers. Correctly executed running-in allows you to extend the life of components and parts and provides nominal flow rate fuel and lubricants.
For most internal combustion engines in the run mode is the optimal rpm range from 2000 to 3000 rpm. "Harmful" for the iron hearts of your four-wheeled friend will be as low (less than 2000), and high (over 3000) rpm of the crankshaft.
At the time of running of the vehicle should be excluded from the Arsenal of skills of driving the car jerks when pulling away with wheel spin and sharp pressing on the accelerator pedal. All operations on the driving should be carried out smoothly and steadily.
If such a riding style is not inherent in you, it makes sense to give the car during the break-in in the hands of a professional driver.
Work on constant speed for a long period of time is also contraindicated rolling the car. The constant work of the new engine at one speed would be fatal. Change the speed and modes of motion, but, as mentioned earlier, do it gently and slowly.
Since the engine idle speed refers to severe driving conditions of the vehicle, use idle exclusively for warming up the engine. Moreover, except for the engine, run need and other systems and car units.
Movement "to stretch"
What is it? This is when the car is moving in a high gear with low speed. For example, on 4th gear at a speed of 40 km/h. In this mode of operation the speed of movement of the piston within the cylinder is relatively low, and the pressure by the ignited combustible mixture is significant. The result is strong grip on the side of the piston to the cylinder wall, the gap of the oil film between cylinder and piston and, consequently, the formation of scuffing on the cylinder walls, reducing compression and power loss of the engine.
Based on similar considerations it is not recommended for running-in period the use of engine braking.
Brake, clutch and gearbox
Running a new car not only involves running-in of engine. Brake pad bedding-in occurs in the first 500-600 miles. Therefore, an aggressive use of the brakes during this period can lead not only to premature brake pad wear, but also to the failure of the entire braking system.
Another unit that requires caring for yourself – the clutch and transmission. Therefore, transmission should switch smoothly and gently, while squeezing the clutch pedal without jerks and throws.
Avoid using the trailer on a new car until then, until the machine completes normal and full of running. For the same reason, should not be excessively overloaded neobyatny car no passengers, no cargo, no matter how useful it may be.
level Control oil
The whole running-in period should regularly check the level of engine oil in the engine, but also all other fluids. Keep an eye on, not stay on the pavement, in a Parking machine, fresh stains from liquids or oil.Don't listen to "experts" who claim that running a new car – a relic of the past that the engines of new cars are "cold" testing on special stands manufacturers, and therefore all parts and components of such machines are already perfectly bedded and lapped.
Cold running is designed to detect defects and malfunctions in components and machines and in no case can not replace a real "hot" tested in real road conditions.