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).

There are various reasons, including but not limited to: financial needs, restrictions from lottery policies, moving abroad, or dissatisfaction with certain features of the vehicle. We will ensure that the vehicle was not sold due to catastrophic failures by ruling out major accidents, water damage, and flooding.

We conduct basic visual inspections and freezing point tests. If the antifreeze's freezing point is insufficient or the engine oil is severely degraded, we will document it. However, considering the shipping duration, we strongly recommend a comprehensive "Full Fluid Service" upon arrival.