▁int akes ▁on ▁the ▁lower ▁forward ▁nose ▁sides ▁and ▁electric ▁fans . ▁Side ▁int akes ▁allowed ▁the ▁unit ▁to ▁take ▁in ▁cool er ▁air , ▁and ▁the ▁electric ▁fans ▁improved ▁a ▁serious ▁reli ability ▁issue ▁found ▁in ▁its ▁earlier ▁DC ▁sister s . ▁ ▁Engine ▁ ▁The ▁MP 1 5 ▁used ▁a ▁roots - b low n ▁ 1 2 - cy l inder ▁ 6 4 5 E ▁engine . ▁The ▁engine ▁is ▁r ated ▁at ▁. ▁The ▁ 6 4 5 ▁series , ▁introduced ▁in ▁ 1 9 6 6 , ▁was ▁E MD ’ s ▁standard ▁engine ▁through ▁the ▁ 1 9 8 0 s . ▁ ▁In ▁the ▁early ▁ 1 9 7 0 s ▁rail ro ads ▁were ▁starting ▁to ▁convert ▁to ▁AC ▁power , ▁the ▁six ▁largest ▁buy ers , ▁Mil w au kee ▁( 6 4 ), ▁Southern ▁Pacific ▁( 5 8 ), ▁Se ab o ard ▁Coast ▁Line ▁Rail road ▁( 4 5 ), ▁Nacional es ▁de ▁México ▁( 2 5 ), ▁Long ▁Island ▁( 2 3 ), ▁and ▁Louis ville ▁& ▁Nash ville ▁( 1 0 ), ▁were ▁all ▁bu ying ▁AC ▁road ▁locomot ives . ▁ 3 6 ▁more ▁units ▁were ▁sold ▁to ▁ 8 ▁other ▁customers . ▁ ▁Current ▁own ers ▁▁ ▁Form er ▁Mil w au kee ▁Road ▁units ▁are ▁now ▁owned ▁by ▁the ▁So o ▁Line ▁Rail road ▁( an ▁American ▁operating ▁subs idi ary ▁of ▁the ▁Canadian ▁Pacific ▁Railway ); ▁those ▁not ▁painted ▁in ▁the ▁Canadian ▁" G old