GB/T 30034-2013
ActiveCriteria for changing of heavy-duty vechicle gear oil(GL-5)
重负荷车辆齿轮油（GL-5）换油指标
Application Summary AI generated
This standard specifies the criteria for determining when heavy-duty vehicle gear oil (GL-5) should be changed, including limits on viscosity change, water content, and wear metal concentration. It is applied in the maintenance and operation of heavy-duty vehicles, such as trucks and buses, to ensure gearbox and differential performance. The standard is used by fleet operators and maintenance personnel to schedule oil changes based on oil condition rather than fixed intervals.
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