When checking local fuel against the engine's requirements, verify the vehicle's identity first, then confirm the commitments. Concrete evidence comes from the fuel conditions specified by the manufacturer, actual local supply and the local grade system, and ignition, emissions and warranty boundaries. Obtain the manufacturer's fuel requirements first, then compare them with what is actually available locally. The records must trace back to the fuel conditions specified by the manufacturer and actual local supply and the local grade system; when ignition, emissions and warranty boundaries change, revise the documents before deciding whether to proceed.
During the quotation stage, you can also refer to What should importers check before buying Chinese pickups for construction or utility clients?. Fuel compatibility decisions are ultimately governed by the local rules and written confirmations in force at the time of processing.