What should be checked daily regarding the radiator?

The focus on checking for leaks using the sight glass under the cab is essential for maintaining the integrity and performance of the radiator system. Radiator leaks can lead to significant issues, such as overheating, engine damage, and loss of coolant. The sight glass provides a clear indicator to quickly assess if there are any visible leaks in the system, allowing for immediate action to be taken before the situation escalates.

Regularly monitoring for leaks ensures that the cooling system remains functional and that sufficient coolant is present, which is critical for regulating engine temperature and preventing overheating. Detecting leaks early also helps preserve the life of the radiator and associated components, ensuring that the vehicle operates efficiently and safely.

Other factors related to the radiator, such as fluid levels, temperature, and the condition of the fins, are indeed important parts of vehicle maintenance. However, daily checks might be more effectively focused on visible evidence of leaks, as any coolant loss can lead directly to performance issues.