[patrickt]

OK, I have a 16" straight finned SPAL puller and the dual pushers up front. The SPAL is on a thermo switch from the lower radiator hose. The pushers are on a manual bypass switch (which also engages the puller as well). This past weekend I took her to a Wounded War Veterans show and it was hot. Really hot. I paid particular attention to my temp gauge and, after driving it at highway speeds, I got stuck in stop and go traffic. My puller fan alone kept the temperature in the low 90's -- I did not need to throw the manual switch for the pushers, which generally brings the temperature down in to the high 80's when I'm not moving. I don't really need the pushers, they're mostly a redundant "backup" system in case the puller, or the puller relay, fails. Once traffic cleared and I moved at a decent pace the air flow alone brought the temps down to 90 or a little below.