Stool and Dr. Surlyjoe have peaked my curiosity, and now Fink adds his thoughts in agreement on the matter. While our three esteemed colleges all use submersible pumps, has anyone tried the radiator, block, reservoir pumping order with an inline pump? Since inline pumps do produce heat, it makes sense. I will plumb my system in this configuration tomorrow, but since I have changed pelts, I will not have any empirical data. Please let me know what y’all think!