Why is the engine cooling system?
Third, the strong wear caused by dust. The engine needs to breathe in the air when burning, even if the best air filter device is also very difficult to absolutely avoid dust inhalation into the engine with the air. Due to dust inhalation caused by strong wear, this wear and tear oil can not be completely eliminated. Especially in China, drought, wind and sand in the region, this strong wear performance is even more prominent.
Second, corrosion wear. After the engine in the shutdown, from high temperature cooling to low temperature, the temperature change process will make the engine internal water condensate gas and even water. This will cause serious metal corrosion of the engine, especially when the engine starts a short run again, the engine temperature is too late to evaporate the water vapor, the situation even worse. This is also the oil can not be solved.
First, corrosion wear. The combustion of fuel in the engine combustion chamber will produce a lot of harmful substances, usually every 100 gallons of gasoline burning will produce 1-5 pounds of nitrogen and sulfuric acid, these substances will not only cause corrosion of the cylinder, but also through the three piston rings , The bottom ring) to the engine, the main parts of the engine, such as cam crankshaft and other metal corrosion, this corrosion can only be used to eliminate the use of lubricants.
Fifth, the normal operation of the engine wear and tear.
Four, cold start dry friction. US General Motors' research shows that when the car engine stops for 4 hours, all the lubricating oil on the friction interface will flow back into the lubricating tank. At this time to start the engine, because the pump was too late to hit the lubricating oil parts, a short period of time will produce cyclical lubrication loss of dry friction, resulting in severe abnormal wear and tear of the engine. This kind of strong wear is simply unable to solve the lubricating oil. (Another relevant research that this strong wear and tear accounted for more than 70% of the total wear of the engine)
