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).

We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.

If General Average is triggered, all cargo owners must share the rescue costs. If you purchased marine insurance with a "General Average included" clause under CIF terms through us, the insurance company will cover this high shared cost for you; if you are an uninsured FOB buyer, you will need to pay it yourself.