RanZe Energy's commercial vehicle lubricant range addresses the full lubrication needs of heavy-duty trucking fleets, bus and coach operators, construction and mining equipment owners, and agricultural machinery operators — providing a factory-direct supply of premium-quality finished lubricants at competitive, volume-tier pricing with full technical documentation and OEM brand packaging options. Our heavy-duty diesel engine oil line covers the current API CK-4 and FA-4 service categories as well as legacy CJ-4 and CI-4 Plus grades, formulated with high-quality Group II and Group III base oil stocks and premium additive technology to deliver outstanding soot dispersancy, oxidation control, wear protection, and extended drain interval capability in modern low-emission diesel engines equipped with diesel particulate filters (DPF) and exhaust gas recirculation (EGR) systems. Manual transmission oils and drive axle gear oils in SAE 75W-90, 80W-90, and 85W-140 viscosity grades conform to API GL-4 and GL-5 specifications, providing dependable protection for synchronized and non-synchronized gearboxes and hypoid rear axle gear sets under high-torque commercial vehicle service conditions. Hydraulic transmission fluids meeting Allison TES-295 and ZF TE-ML 14 specifications are available for automatic and automated manual transmission applications. We also supply diesel engine coolants, brake fluids, and power steering fluids to support comprehensive fleet maintenance programs from a single source. Volume supply contracts with scheduled delivery, dedicated inventory reservation, and technical on-call support are available for fleet operators and commercial vehicle lubricant distributors. Request a product portfolio overview and volume pricing schedule from our commercial vehicle supply team.