Yes, you should let the engine cool before adding oil. When the engine is hot, the oil becomes very thin due to the high temperatures, making it more likely to drip and potentially burn you. Additionally, hot oil can foam up when poured into the engine, which affects its lubricating properties and could lead to inadequate lubrication of critical engine components. Allowing the engine to cool for about 10 to 15 minutes ensures that the oil has settled to its normal viscosity and reduces the risk of spills and burns. This practice not only protects your safety but also helps maintain the optimal performance and longevity of your engine by ensuring the oil is added under the correct conditions.
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