Oh yes it does, they can crow all the want with their synopsis but I had first hand knowledge their idea holds no ‘water’ pun intended. REAL WORLD EXPERIENCE from 1968 in a 62 Chevy 283 wagon. It takes time to transfer heat, it’s not instantaneous. Does your coffee cool down fast in a thermos bottle? How about a one row vs 4 row radiator? Same amount of water but the 4 row has more surface area to dissipate the heat into the air. Time