Wednesday, December 30, 2009

Can a transmission oil cooler cool too much?

I have a 1995 Ford Taurus with 182,000 miles and am looking at adding a transmission oil cooler (it is my understanding that cooler oil can mean longer transmission life, and for $50, why not). The car is in northern California where most of the time it is between 50 and 85 degrees F. A couple questions:





1) Is is possible that the new cooler could cool too much and mess with the proper operation of the transmission?





2) I drive only on highways about 22,000 miles a year. The way I see it the car is getting decent cooling at high speeds on the highway, so is it even worth it to add the cooler at all?





I have scoured forums and haven't found too much. I'm hoping to get some solid answers here. Thanks in advance for your time.Can a transmission oil cooler cool too much?
you can't cool enough. the operation of the tranny will continually create heat, so the cooler the oil is, the longer lasting the parts will go.


there already is an oil cooler built into the radiator, it's not very potent, but good enough for regular type of driving. you can plumb an external one in, but it'll be very hard and very tight. you might need like an inline style and mount it to the side of the engine bay.Can a transmission oil cooler cool too much?
the cooler the transmission fluid runs, the longer the fluid, and the transmission, will last. heat is what kills automatic transmission, for the most part. the best temperature to run an automatic at seems to be around 140 degrees or less. at that temperature transmission fluid lasts for 100,000 miles. get yourself a trans cooler designed to handle loads up to 26,000lbs and install it on your car. your transmission will thank you. heck i am planning to install an oil cooler when i swap a T5 into my mustang since it also uses ATF. i have never had any problem with an automatic transmission running too cold.
The cooler will be fine - and it will help prevent the transmission from overheating.


An auxiliary transmission cooler is standard on a vehicle with a trailer towing package - and that alone indicates that the possibility of cooling too much isn't really a concern since in many, if not most instances, the vehicle won't be pulling a trailer.
You can not keep your transmission too cool. The cooler the better. Keeping the tranny fluid as cool as possible results in longer life and better power transfer and better throttle response. It could even lead to better gas mileage.
no cannot cool too much as heat is what causes wear. Almost all coolers use ambient temp to cool. best is to connect add on Cooler to return line from radiator to max cooling effect.
unless you are hauling heavy loads or driving a lot in the mountains a cooler won't help you much. Just maintain the transmission well and you will be ok.
I have never heard of a oil cooler cooling to much, ever, so i would have to say no.

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