I NEVER said the fluid will get hotter,,,,, I MEANT that you will not get the FULL EFFECT or the FULL AMOUNT OF COOLING if you TAKE the fluid from the top.. HEAT RISES and the heat dissapated from the bottom of the cooler will Rise!!!! Will some of it heat up the top of the cooler,,, YES,, will the fluid be cooler if you remove it from the BOTTOM of the cooler than the top of the cooler??? YES.... WHY DO YOU THINK when there is a RADIATOR with a TRANS COOLER in there,, the fluid GOES IN THE TOP and comes out the bottom... DETROIT has DUMMIES for engineers???? COME ON GUYS .....