G . ▁Following ▁the ▁introduction ▁of ▁the ▁first ▁service - friend ly ▁cup ▁oil ▁filters ▁with ▁automatic ▁d rain ▁system ▁and ▁pl astic ▁sc rew ▁cap ▁in ▁ 1 9 8 8 , ▁the ▁filter ▁plant ▁H eng st ▁Filter werke ▁Berlin ▁GmbH ▁& ▁Co . ▁K G ▁was ▁founded ▁in ▁Berlin ▁in ▁ 1 9 9 0 . ▁In ▁ 1 9 9 2 , ▁Walter ▁H eng st ’ s ▁daughter , ▁ ▁W era ▁R ött ger ing , ▁founded ▁the ▁national ▁registered ▁association ▁Herz ens w ün sche ▁e . ▁V . ▁( He art ’ s ▁Des ires ). ▁In ▁ 1 9 9 3 , ▁H eng st ▁launched ▁the ▁environment ally - friend ly ▁E NG ER GET IC ® ▁filter ▁system , ▁which ▁was ▁the ▁first ▁metal - free ▁filter ▁insert . ▁In ▁ 1 9 9 5 , ▁the ▁first ▁cup ▁oil ▁filter ▁with ▁an ▁integrated ▁cent rif uge ▁was ▁introduced , ▁followed ▁by ▁the ▁first ▁fluid ▁management ▁module ▁in ▁ 1 9 9 6 . ▁In ▁ 1 9 9 7 , ▁a ▁highly ▁efficient ▁oil ▁mist ▁separator ▁system ▁( cy cl ones ▁for ▁Otto ▁and ▁dies el ▁engines ) ▁was ▁introduced . ▁ ▁In ▁ 1 9 9 8 , ▁a ▁third ▁of ▁the ▁H eng st ▁Filter werke ▁plant ▁was ▁destroyed ▁by ▁the ▁largest ▁fire ▁in ▁Mün ster ▁since ▁World ▁War ▁II . ▁In ▁ 1 9 9 9 , ▁H eng st ▁founded ▁a ▁joint ▁vent ure ▁in ▁Jo in