1967 dart GTS 440 car . 727 3500 stall 410 gears, alu rad dual cooling fans ( both pullers ) , engine temp runs 190-195 in town / get on highway ( 90-95 kph ) temp starts to rise after about 15 min, goes to 200-205 as soon as i get off highway temp starts to drop back again / 180 t stat in it. Had a tranny cooler hanging in front of rad ( i know tranny gets warm cause its not locking up ) re-located under car with a fan cooled unit. Doesnt matter on out side temp could be 30 c or 15 c. Any thoughts