Puru ea Pulungoana e etselitsoe khokahano e potlakileng le e tšepahalang ka litsamaiso tsa maubrication tse ikemetseng. Puctu ea eona - ho kopanya moralo ho tiisa ho kenella habonolo ntle le tlhoko ea lisebelisoa tse khethehileng, e e etsang e loketseng ho lokisetsoa ka potlako le ho khutlisa. Lits'ebetso tsena tsa Valve li ne li emetse e mong - Tsela ea Grease, e thibela ho khutlisetsa le ho netefatsa ts'ebetso e sa lumellaneng ea mabelo a libōpeho-moholo.