How Many Kilograms is 4 Liters of Engine Oil?
1 Answers
4 liters of engine oil is approximately 3.48 kilograms, or about 6.8 pounds. The weight may vary slightly depending on the brand of the engine oil. Engine oil, also known as Engine Oil in English, serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. Engine Oil Grading: The 'W' in motor oil stands for WINTER. The number before the 'W' indicates the oil's flow performance at low temperatures, with smaller numbers indicating better cold-start performance. The number after the 'W' represents the oil's high-temperature stability, with higher numbers indicating better stability at high temperatures. Winter oil grades include: 0W, 5W, 10W, 15W, 20W, 25W. The 'W' denotes winter, and the smaller the number before 'W', the lower the oil's viscosity at low temperatures, the better its flow performance, and the lower the applicable minimum temperature. API Engine Oil Quality Classification: API engine oils are divided into two categories. One category starts with 'S', indicating oils suitable for gasoline engines, while the other starts with 'C', indicating oils suitable for both gasoline and diesel engines. 'S' category oils: SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, SN. These oils start with 'S', and the letters from A to N indicate progressively higher grades. For example, SN is a higher grade than SM. 'C' category oils: CA, CB, CC, CD, CE, CF. These are general-purpose diesel engine oils, and similar to the 'S' category, the further the letter in the alphabet, the higher the oil's grade. Main Functions of Engine Oil: Lubrication: There is rapid relative sliding between the piston and cylinder, and between the main shaft and bearing. To prevent excessive wear, an oil film must be established between these sliding surfaces. A sufficiently thick oil film separates the sliding surfaces, thereby reducing wear. Auxiliary Cooling: Engine oil has a relatively low specific heat and does not inherently cool the engine. However, during engine operation, heat generated by fuel combustion is carried back to the oil pan by the oil and then dissipated into the air, aiding the radiator in cooling the engine. The actual cooling is performed by water (or antifreeze) outside the engine block. Cleaning: High-quality engine oil can carry carbon deposits, sludge, and worn metal particles back to the oil pan through circulation, cleaning contaminants from the engine parts via the flow of the lubricating oil. Sealing and Leak Prevention: Engine oil forms a seal between the piston rings and piston, reducing gas leakage and preventing the entry of external contaminants. Rust and Corrosion Protection: Lubricating oil adheres to part surfaces, preventing contact with water, air, acidic substances, and harmful gases.
