Weisheng CI-4 Heavy-Duty Diesel Engine Oil（威胜CI-4）— manufactured by Shandong Huanqiu Lubricant Oil Co., Ltd. Formulated for modern gasoline and diesel engines, batch-traceable to raw lot.
Specification sheet (as published by the manufacturer):
Commercial Vehicles
Base oilSINOPEC · GROUP II–III
Packing1L · 4L · 18L · 200L · IBC
CertificationISO 9001 · 14001 · 45001
TraceabilityBATCH-LEVEL