How to Damage an Engine Without Leaving Traces?

[MollyLynn]

An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, etc. Adding half a bottle of beer into the engine (will cause the engine to be scrapped). It won't be detectable afterward, but don't try it easily.

[LeJake]

I remember one time when my friend's car had some engine trouble. At first, we thought it was a minor issue and tried to fix it ourselves. But the problem kept getting worse, and when we finally took it to the shop, we found out the fuel pump was clogged. Actually, engine problems like overheating, foreign objects getting stuck, or insufficient lubrication can all cause hidden damage. If you handle things unprofessionally—like improper modifications or neglecting maintenance—the engine will age faster. But a mechanic can easily spot abnormalities with a diagnostic tool. I recommend regularly checking oil levels and coolant temperature, and avoiding prolonged idling to protect the engine. Trying to cut corners will only backfire, potentially compromising safety. Sticking to scheduled maintenance and timely repairs is the way to go—otherwise, you might end up paying much more in the long run.