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).

It is extremely dangerous and usually not allowed. This can easily trigger the anti-money laundering (AML) controls of China's foreign exchange administration. The remittance account title must closely match the contract buyer and the bill of lading consignee. If payment on behalf is necessary, a legally binding "Tripartite Payment Agreement" must be provided in advance and undergo compliance review by our finance department.

If there is a minor leak in the lines due to bumps, it is possible that the cooling may not work upon arrival. This is a normal physical loss. The cost of vacuuming, pressure testing, and recharging refrigerant at a local auto repair shop is low and is the buyer's responsibility.