... different types: Application: DYJ Multi-Function Lubrication Oil Purifier is developed according to the characteristics of various ... of lubrication oil, such as gear oil, engine oil, hydraulic oil, freezer oil, compressor oil, vacuum pump oil, internal-combustion oil, heat treatment oil etc. ... it like new one. DYJ Multi-Function Lubricating Oil purifier is widely apply in electric power, metallurgy, ...