Beside taking advantage of using duty cycle (which usually is measured in more than a minute) the beauty of the Fanzilla is the way it can take the "kick" out of both fans starting together. This is a major improvement over the origional system and was never considered by the deseigners of the electrical system. If you can only afford 1 "Zilla" then this is the one. Of course you can attempt to copy it's functions but the way it works and installs is elegant and simple so anyone can do it as opposed to some of the proposed methods that require changing the wiring of the car. Even the fanzilla instuctions warn that it cannot compensate for existing problems in the cooling and electrical systems. David Teitelbaum vin 10757 --- In dmcnews@xxxx, Martin Gutkowski <webmaster@xxxx> wrote: > The mechanical coolant system and the electrically driven systems are > not "one system" > > Your car might be properly flushed, bled and with new coolant, but if > the fans don't work, it WILL overheat. Conversely if the fans work > perfectly, and you get an air-lock, the car will STILL overheat. > > What we're discussing here is the electrics which drive the cooling > fans, NOT the coolant system. > > (sorry) > > Martin > #1458 > > roscsyl wrote: > > >Gary - In my opinion, most of the problems people have with cooling > >are maintenance issues, not design deficiencies. Not changing > >coolant on a regular basis, not properly bleeding the system, > >etc. are the primary causes. The market for these uprated > >parts are to provide more margin for poor maintenance practices. > > > >Mike > >