Can you add engine oil when the engine is hot?
2 Answers
You can add engine oil when the engine is hot. Engine oil consists of two parts: base oil and additives. The base oil is the main component of lubricating oil, determining its basic properties. Additives can compensate for and improve the deficiencies in the performance of the base oil, imparting certain new characteristics, making them an important part of lubricating oil. Engine oil grades are classified according to quality and viscosity levels. Oil for gasoline engines is usually denoted by the letter "S," while oil for diesel engines is usually denoted by the letter "C." Engine oil refers to the specialized lubricating oil used in internal combustion engines, and it also serves functions such as cleaning, rust prevention, and cooling.
I've been driving for many years, and once when the oil light came on, I hurriedly added oil while the engine was hot. As soon as I opened the hood, the hot oil vapor scalded my arm, leaving a scar to this day. When the engine is hot, the oil temperature can easily exceed 80 degrees Celsius, which is hot enough to cause burns. Moreover, oil becomes thinner when hot, making dipstick readings inaccurate and leading to overfilling and spillage. The best practice is to turn off the engine and wait at least half an hour for it to cool down before adding oil. This allows the oil to settle, ensuring accurate measurement and safety. If you must add oil while the engine is still warm, make sure it's been turned off for a few minutes, wear thick gloves, and proceed slowly without rushing. Safe driving starts with attention to detail, and regularly checking oil levels and maintaining your vehicle are fundamental habits.
