What is the cold-start performance of CI-4 15W/40 Diesel Engine Oil

CI - 4 15W/40 Diesel Engine Oil has its own characteristics and performance in terms of low temperature starting performance.
First, the "15W" represents its low-temperature viscosity grade. This rating indicates that the oil has relatively good fluidity in low temperature environments. When the ambient temperature decreases, the viscosity of the engine oil will increase and the fluidity will become worse. Compared with higher grade engine oil (such as 20W, etc.), 15W engine oil can flow inside the engine more quickly at low temperatures. On cold winter mornings, for example, in an environment of about minus 15 degrees Celsius, it can be quickly transported by the oil pump to various key lubrication parts of the engine, such as the crankshaft, connecting rods, pistons, etc., thus providing a preliminary basis for starting the engine. Lubrication guarantee, reducing dry friction between metal parts during startup and reducing engine startup resistance.
However, compared with some low-viscosity engine oils (such as 5W or even 0W series) specially designed for extremely cold areas, its low-temperature starting performance has certain limitations. Under extremely cold conditions, such as in severe cold areas below minus 25 degrees Celsius, the viscosity of 15W/40 engine oil will still increase significantly, the flow rate will slow down, and it may not be able to fill the entire engine interior as quickly as low-viscosity engine oil. This may result in a longer start-up time when the engine is started, and the lubrication may not be fully in place at the moment of start-up, which may cause a certain degree of wear risk to engine parts.
In order to improve the starting performance of CI-4 15W/40 Diesel Engine Oil in low temperature environments, some auxiliary measures can be taken. For example, preheat the engine before starting, and use the engine's preheating device or external heating equipment to increase the temperature of the engine oil, reduce its viscosity, and improve fluidity; you can also choose a warmer garage environment when the vehicle is parked to reduce The extent to which engine oil is affected by low temperatures.
Generally speaking, CI-4 15W/40 Diesel Engine Oil has certain low-temperature starting capabilities in general cold environments and can meet the needs of most conventional low-temperature working conditions. However, under extreme cold conditions, its low-temperature starting performance is insufficient. will be highlighted, and additional countermeasures need to be taken to ensure smooth starting of the engine and reduce wear.
If you are interested in CI - 4 15W/40 Diesel Engine Oil, please contact LEANON Petroleum Technology, our professional team will provide you with tailor-made solutions and comprehensive technical support.