Drb - P Mafuta opaka mafuta omwe amagwiritsidwa ntchito nthawi zambiri miyala yambiri ya mafuta opezeka mkati komanso mothandizira kuperekedwa ndi mafuta. Pampo amagwiritsidwa ntchito nthawi yayitali muwiri - makina amafuta. BS - B ndi yoyenera kudzazidwa ndi mafuta othira mchere. Kusungidwa kwa mafuta kumakhala ndi ma alamu am'madzi. Mukakhala ndi nduna yamagetsi yamagetsi, pampu yopaka mafuta imathandizira kuyang'anira kwathunthu pawiri - Njira zomata zamafuta odzola ndikuthandizira kuwunika kwa makina.