Re: 55 Packard Transmission Cooler Mockup ?

Posted by Dave Kenney On 2009/12/13 14:13:49

Randy And O-D, Those are both very good postings. The way I understand the purpose of the OE fluid to fluid heat transfer coolers is that they are intended to keep the transmission oil in an ideal temperature range and not simply to cool the oil otherwise cars would have been designed that way. It is possible and even likely that an auxiliary cooler will overcool transmission oil if the ambient temperature is low. The tranmission shop technicians I deal with recommend that an auxiliary cooler be covered or disconnected in winter to allow the transmission oil to warm up along with the engine. As has already been noted the ideal method to install an auxiliary cooler if one is needed is to place it in series with the rad cooler/warmer.