This is a key legal issue. If the inspection is conducted by a third party appointed by us, we will be the primary responsible party and provide limited compensation to you, after which we will seek reimbursement from the inspection agency; if the inspection agency is designated by you personally (such as SGS), you will need to file a claim directly with that agency according to its service terms.

We use two steps: 1. Insert a medical-grade endoscope through the spark plug hole to visually inspect cylinder wall scratches and carbon buildup on the piston top; 2. Extract an engine oil sample to check for large metal debris or emulsification (caused by coolant leakage).

Do not use a high-pressure water gun directly! The high-pressure water can instantly damage the fragile aluminum fins of the condenser, leading to a permanent decrease in cooling efficiency. We can only use a low-pressure air gun or a soft brush for surface cleaning.