The tank and cap for any compartment should be?

The tank and cap for any compartment should be secure with no leaks because safety and functionality are paramount in commercial driving. A secure tank ensures that fluids, such as fuel or other essential liquids, do not spill or leak, which can pose environmental hazards, lead to accidents, or result in mechanical failures. Ensuring that there are no leaks is critical for maintaining the integrity of the vehicle and protecting both the driver and the environment.

While options like being polished for aesthetics or marked with clear labels are useful, they do not address the fundamental safety concerns associated with the operation of a commercial vehicle. Additionally, mounting parts loosely for easy access can compromise their secure mounting, increasing the risk of leaks and other issues during transit. Thus, the emphasis on a secure, leak-free tank and cap is essential for ensuring safe operation and compliance with safety regulations.