▁two ▁separate ▁circ uits ▁with ▁very ▁different ▁specific ations ▁of ▁flu ids ▁needed . ▁ ▁Both ▁variants ▁use ▁seven ▁forward ▁spe eds . ▁Like ▁all ▁D CT s , ▁the ▁Por sche ▁P DK ▁transmission ▁is ▁fund ament ally ▁two ▁separate ▁manual ▁transm issions ▁in ▁one . ▁With ▁the ▁ 1 st , ▁ 3 rd , ▁ 5 th , ▁and ▁ 7 th ▁g ears ▁and ▁reverse ▁available ▁on ▁one ▁sh aft , ▁and ▁ 2 nd , ▁ 4 th , ▁and ▁ 6 th ▁g ears ▁available ▁on ▁the ▁other ▁sh aft . ▁ ▁Por sche ▁claims ▁the ▁Do ppel ku pp lung ▁P DK ▁transmission ▁will ▁replace ▁the ▁out going ▁conventional ▁Ti pt ron ic ▁automatic ▁transm issions . ▁However , ▁other ▁reliable ▁industry ▁sources ▁state ▁that ▁Por sche ▁still ▁int ends ▁to ▁use ▁conventional ▁automat ics ; ▁with ▁the ▁eight - speed ▁Z F ▁ 8 HP ▁being ▁c ited . ▁ ▁Por sche ▁claims ▁not ew orth y ▁improvements ▁in ▁CO 2 ▁em issions ▁of ▁around ▁ 1 5 % ▁when ▁comparing ▁D CT ▁install ations ▁against ▁its ▁former ▁automatic ▁transmission , ▁of ▁which ▁half ▁can ▁be ▁directly ▁attributed ▁to ▁the ▁D CT . ▁When ▁compared ▁directly ▁with ▁a ▁manual ▁transmission , ▁ 1 6 % ▁improvement ▁can ▁be ▁directly ▁attributed ▁to ▁the ▁D CT . ▁ ▁Q or os ▁Get rag ▁received ▁the ▁first ▁order ▁for ▁its ▁dual - cl utch ▁transmission ▁ 6 D CT 2 5 0 ▁from ▁Q or os ▁Autom ot