In the winter morning you can often see car owners running their cars parked under snow. Young drivers often wonder how important is this procedure and does it do any good? Let’s get right, go.
How?
In the cold, many systems and components of the car are subjected to severe loads, especially for the engine. At low temperatures, the oil in the engine becomes more viscous, which negatively affects its ability to lubricate parts.
First of all, the lack of lubrication affects the working surfaces of pistons and cylinders.
Why?
The point is that the lubricant for these parts is applied by spraying. However, when the oil becomes thick in cold weather, it cannot be evenly distributed. This results in surfaces requiring lubrication not being sufficiently protected. It is important to note that after the car launch pistons are heated up quite quickly, while the cylinders remain cold for some time. If you start to use the engine immediately (creating an increased load), it can lead to a serious breakdown. During intensive combustion, the pistons are heated and expanded. This results in a reduction of the gap between the hard-working elements, and one of the pistons may catch on the wall of the cylinder. If you do not hurry and let the engine to heat, lubricants will become less viscous, evenly distributed over the surface and gaps will return to normal. Therefore, the car warm in cold weather is a necessary condition for its proper operation.
How much?
According to experts, if the temperature outside is positive (about zero degrees), then the car warms up enough for one minute, especially if the driver smoothly starts movement without spinning the motor.
At temperatures from zero to -10 degrees Celsius it is recommended to let the engine work on idle speeds for at least a couple of minutes.
If it is cold and freezing outside, it is recommended to let the car work for five minutes or more (for example, until the glass has melted). Also, the driver should avoid sudden acceleration for the first thirty minutes after starting the movement.
When will the engine be warmed up?
The most convenient way to do this is to monitor the tachometer. As soon as the arrow drops to 700-800 o/min, you can start moving slowly.
If the arrow or graphic scale matches the data displayed on the phone screen, this display can be trusted. In addition, mobile applications often provide additional useful information such as transmission temperature, whether it is an automatic gearbox or a variator.
Do not freeze, until soon!