The traditional filter type purifier is non-economical because you should discard filter and replace it with a new one when it is clogged by foreign substances such as sludge, etc.
ISP-type purifier can remove sludge (by 1st filter) and water (by 2nd filter) out, promoting the efficiency of the engine and reducing the need for frequently oil changes, as well as reducing
maintenance cost because it's possible to clean and re-use the existing filter after cleaning.
In addition, the filters are completely separated and avoidsthe inconvenience of traditional hand-operated draining thanks to auto-discharge of the filtered water by auto drain system.
Oil Purifier (For Fuel oil / For Lubricating oil)