<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?ruhusu mafuta katika sehemu za juu za injini kukimbia tena ndani ya crankcase na kufuata mapendekezo ya mtengenezaji wa injini kwa ugawaji wa mafuta ya api na viscosity ya mafuta.  <response>: allow the oil in the upper portions of the engine to drain back into the crankcase and follow the engine manufacturers recommendations for api oil classification and oil viscosity. 