Quote:
Joe Douglas wrote:
it seems like it would actually heat the tranny fluid up since there is hot water running through the "cooler" -- I've just never seen one like that and thought it was strange
I'm not so sure it would be any different from the "modern" trans cooler setups in the radiator, which also are "cooled" (or not) by relatively hot water. It looks like the Packard setup, which was new to me too not that long ago, would provide somewhat better cooling, since it lets coolant expand in the "box," which would tend to lower coolant temp,
Either setup reminds us how important it is to have a well maintained engine cooling system whenever we're running an automatic. Overheating the engine also causes higher transmission temps. Often people pulling trailers blame a "weak transmission" for trans failure, when it's really the higher engine temps while towing that could be doing the dirty work.
Another little advantage of the Packard external cooler is you don't need those high pressure hydraulic lines going into the radiator, which, if they fail on the highway, really make a mess under the hood, and are an expensive hassle to replace. (Ask the man who found out the hard way.)
Hence, an auxiliary trans cooler is often the best insurance. If you want to keep the car's original underhood appearance, you could leave the "box" hooked up and add the auxiliary, which would be out of sight unless you crawled under the car to look.
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=36049