It is generally not recommended to change the oil in a motorcycle engine when it is hot. Ideally, the engine should be allowed to cool down before performing an oil change. Here's why:
Hot Oil: When the engine is running, the oil becomes hot and can reach high temperatures. Hot oil has a lower viscosity, making it thinner and more fluid. This can make it difficult to drain the oil completely and increases the risk of burns or injury if it comes into contact with the skin.
Oil Drainage: Allowing the engine to cool down before an oil change helps ensure that the majority of the oil has settled in the oil pan, allowing for more effective and complete drainage. This helps remove any contaminants and old oil, which is important for maintaining the engine's performance and longevity.
Accuracy of Oil Level: Checking the oil level accurately is important during an oil change. If the engine is hot, the oil may be dispersed throughout the engine, making it difficult to get an accurate reading. It's best to wait for the engine to cool down, allowing the oil to settle, before checking and adjusting the oil level as needed.
If you find yourself needing to change the oil in your motorcycle while the engine is hot due to unforeseen circumstances, exercise caution. Take necessary safety precautions, such as wearing protective gloves and using a heat-resistant container for the hot oil. However, it is generally recommended to wait for the engine to cool down before performing an oil change to ensure a safer and more effective process.