What does "four items" mean?
The antiknock performance of gasoline depends on the octane number of gasoline. Long term car stopping, the octane number of gasoline would decrease with increasing loss and glial content of light components, so the antiknock decreases. Therefore, the gasoline tank should be tightly closed and avoid excessive temperature. The gasoline storage time is best not too long.
Corrosion is mainly caused by the combined action of moisture, oxygen and corrosive substances in the air. Therefore, for a long time to stop the car, should maintain a clean metal surface. The garage in the parking lot should be kept ventilated, keeping the air relative humidity below 70%. The dust, dirt and moisture on the car should be removed in time. Grease the grease or grease the grease on the surface of the rusted part and the surface of the machine. The pores in each assembly shall be sealed to prevent air, moisture and dust from entering the interior.
Rubber products, such as tires, belts and dust covers, often suffer from aging, swelling or deformation, resulting in deterioration in performance and shorter service life. The aging of rubber product, mainly due to the rubber polymer belonging to hydrocarbons unsaturated, easy to absorb oxygen in the air oxidation, and vulcanized rubber has a certain permeability, oxygen easy access to internal oxidation. Direct sunlight, in particular, can lead to rapid aging of rubber. Rubber products are contaminated by gasoline and oil, which can cause volume expansion, gum loosening and elasticity drop.
Start the engine at least once a month, idle for 4-5 minutes, check the operation of the engine. In case of abnormal phenomenon, it is necessary to adjust and repair in time. Also, check the battery regularly. The electrolyte level of the battery must be higher than the plate 10-15mm. When it is not enough, the distilled water should be added in time, and the battery should be kept sufficient, and the battery should be charged when necessary.
