Standards for oil deterioration in hydraulic systems of construction machinery

Notes on Project Standard values

When the viscosity changes by ±(10-15)% and three of the indicators exceed the standard value, new oil should be replaced

Acid value (mg(KOH)/g) ±(20-30)%

Moisture content (volume) > 0.15%

Particulate impurities shall not be lower than the specified contamination grade

The specific gravity changes by ±0.05

Rust test: Rust

Corrosion test corrosion

The emulsification condition has been emulsified

The state of the oil changes from boiling to blackening