Rough terrain forklift is a kind of diesel powered engineering machinery. It is important to replace engine lubricating oil in the process of daily maintenance. How to choose engine lubricating oil?
Under different temperatures, appropriate engine lubricating oil should be selected, so that rough terrain forklifts can be better used and fuel consumption can be reduced.
For example, when the temperature drops in winter, the fluidity of lubricating oil becomes poor. If you don't pay attention to replacement, 4WD rough terrain forklift wiping trains in cold areas are prone to difficult starting and increased fuel consumption. When the temperature is high in summer, the lubricating oil has good fluidity. If the lubricating oil in winter is still used, it cannot be lubricated effectively, which will cause engine wear.
There are two main criteria for selecting lubricating oil: oil level and viscosity level. First select oil level and then viscosity level.
1. Oil performance
If you pay attention to the oil drum packaging when changing the oil, you may have seen symbols such as CH-4 or CJ-4 on the oil lubrication drum. What does this mean?
These represent the grade of lubricating oil. "S" series represents gasoline engine oil; "C" series represents diesel engine oil. When the letters "s" and "C" exist at the same time, it means that the oil is general-purpose for gasoline and diesel. At the same time, it is also divided into different levels. The higher the level, the better the oil quality (abcdefjhij).
2. Viscosity grade
In addition, you will find that there are symbols such as C 15w-40 on the oil barrel. What does it mean? The front 15W indicates the low-temperature viscosity level, which is divided into 0W, 5W, 10W, 15W, 20W and 25W. The smaller the number, the better the low-temperature performance; The latter 40 indicates the viscosity level at 100 ℃, which is divided into 20, 30, 40, 50 and 60. The larger the number, the higher the viscosity.
Only the oils used in high temperature or low temperature environment, such as CF 40, 50 and 10W, are considered as single-stage viscosity oils. The engine oil with both high temperature performance and good low temperature performance is called multi viscosity engine oil, such as CF 5W-40, 15w-40, etc. At present, it is mostly multi-level viscosity oil.
In the severe cold climate in winter, most areas can choose CF 10W-30 or C 5W-40 oil.
With this knowledge, you can choose fuel according to your own situation! For example, the lowest temperature of your kaystar 4WD off road forklift in winter is about - 20 degrees. You can choose 10W-30! When the maximum temperature in summer is 40 ℃, you can choose CF 15w-40.