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).

Experience turbo lag and power surge during road tests; check for significant oil accumulation at the turbo intake and intercooler connections (slight oil vapor is normal); and use OBD to read the real-time boost pressure peak to see if it meets factory settings.

We are only responsible for delivering the goods to your designated transshipment port (such as Jebel Ali Port in Dubai). The warehousing fees, customs clearance fees, and storage fees for re-export within the free trade zone need to be calculated separately with local freight forwarders.