General Pump LK Owner Manual - Manual (Page 9)

GENERAL PUMP
A member of the Interpump Group
LK SERIES
Page 9
In any case, oil must be changed at least once a year since it may deteriorate by oxidation.
For room temperatures that differ from that mentioned earlier, follow the indications contained in the diagram
below, keeping in mind that the oil must have a minimum viscosity of 180 cSt.
The spent oil must be placed in a suitable container and disposed of properly at an authorized center.
Do not under any circumstances discard it in the environment.
VISCOSITY/ROOM TEMPERATURE DIAGRAM