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).

Absolutely not. Any secondary damage caused by overseas non-professional repairs, violent disassembly, or the use of inferior replacement fluids will immediately void any form of "extended parts compensation" we provide.

This is considered a force majeure risk. We will require the vehicle's state of charge (SOC) to be maintained in a safe dormant range of 30%-50% before loading, and we will insure you for all marine risks under CIF terms. If the battery suffers thermal runaway total loss due to abnormal cargo hold temperatures, the insurance company will compensate.