How Many Kilograms is 4 Liters of Engine Oil

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4 liters of engine oil is approximately 3.48 kilograms. The following points should be noted when selecting engine oil: Fully synthetic oil offers superior performance: Most fully synthetic oils are formulated using Group III, IV, or V base oils, exhibiting mid-to-high level performance in oxidation resistance, wear resistance, high-temperature shear resistance, and other indicators. Semi-synthetic oils are primarily blended with Group III base oils, with performance metrics lower than fully synthetic oils of the same viscosity. Therefore, fully synthetic oils provide better engine protection and performance enhancement. Longer maintenance intervals: Fully synthetic oils can last up to 10,000 kilometers before requiring a change, whereas semi-synthetic oils typically need replacement every 7,500-8,000 kilometers.