Tashin man shafawa yana cire daskararru mai ƙarfi, mai harded sabulu, ko kuma clumps kafa saboda tsufa wanda zai iya zama gauraye yayin sufuri. Yana hana wadannan gurbata daga cloging metiting ko mai ba da izini, tabbatar da ci gaba, barga, da man shafawa mai samarwa a cikin tsarin lubrication.