What is generally the best practice regarding engine oil during the break-in period of a new engine?

During the break-in period of a new engine, changing the oil after the initial hour of operation is considered a best practice. This is primarily due to the fact that new engines undergo a period where metal components are seating against each other. During this time, it's typical for small metal particles and debris to be released as the engine parts wear in.

Changing the oil after the first hour helps remove these contaminants from the engine, which can otherwise circulate and potentially cause premature wear on engine components. This practice ensures that fresh oil, which has the appropriate additives to promote optimal performance during break-in, is available to lubricate the engine parts effectively.

Overall, while other options may focus on different aspects of engine oil properties or longevity, the strategy of changing the oil early is crucial for ensuring the longevity and proper performance of a new engine, making it the most appropriate choice during the break-in period.