Which of the following is a sign of potential engine issues?

• A. Constant high fuel efficiency
• B. Frequent oil changes
• C. Oil leaks
• D. Routine maintenance checks

Answer: (C)

Oil leaks are a significant sign of potential engine issues. They indicate that the engine's oil system may be compromised, which can stem from faulty gaskets, seals, or other components that include the potential for wear and tear over time. An oil leak can lead to insufficient lubrication of engine parts, which may cause serious damage if not addressed promptly. Detecting oil leaks is therefore crucial, as they can be an early warning of more severe problems, such as overheating or engine failure.

On the other hand, constant high fuel efficiency is generally a good sign, indicating that the engine is operating effectively. Frequent oil changes and routine maintenance checks are also positive practices that help maintain engine health and can prevent issues. These activities contribute to proper engine function rather than indicate that something is wrong.