Abstract
It is known that reducing friction losses and, consequently, wear is the most important function of engine crankcase oil. Many oil manufacturers add additives to the oil composition - thickening and friction modifiers. Achieving a rational periodicity of crankcase oil changing generally reduces the operating consumption of oil, the cost of which accounts for a significant share of the total cost structure of operating costs. The developed method for evaluating the energy-saving properties of the researched three grades of oil by viscosity-temperature characteristics allows for reducing the cost of conducting special research. The viscosity value's dependence on the temperature range from 20 to 100 ° is experimentally established. This work presents part of the research results to justify the choice of rational changing periodicity of diesel engines’ crankcase oil, considering the energy-saving properties of oils. During operation, it is also necessary to comply with the requirements for preserving the recommended grades of fuel and lubricants, observing their use and safety modes, and a reasonable oil level in the crankcase.
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