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).

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.

As rubber seals age, "slight oil seepage (oil stains but no dripping)" is very common in used cars and is not considered a major fault. Our recommendation is: as long as the oil level does not drop abnormally, just clean and monitor it regularly after arrival, without the need to immediately incur high costs to disassemble and replace the seals.