Trans cooler fliud route
Although I've been towing for years, and have always had a transmission cooler on every tow vehicle, I can't remember whether the fluid should come from the trans thru the cooler then to the rad and o...
Forum Discussion
Air to air heat exchangers are not as efficient as higher density
thermally conductive materials...like ATF to Coolant...which is a liquid
to air heat exchanger. Laws of Thermal Dynamics...and with more
efficient liquid to liquid...less surface area needed...lower GPA...etc
Moisture in ATF creates acid over time and accelerated with heat...but
that heat is the way moisture is vaporized out. Preventing moisture
intrusion is the first and best way to manage this
Most all of today's automatics have a better closed venting system, so
humidity intrusion is not as high, but it is still there
As I said earlier:
"....Almost semantics...whether before or after the main radiator in
'most' conditions...but in very cold areas...it may not get warm
enough to vaporized that moisture....which has a high change of
turning acidic to rot out parts of the tranny innards...."
In extreme ambients...with the ATF external aux cooler AFTER the main
engine radiator, will have the AFT cooled down too low and out of it's
temp range
This is why I think installing the ATV external aux cooler before the
main radiator in extreme ambients will warm or heat up the AFT
In the closed metal tubing and synthetic tubing...there is no 'air'
pocket for any moisture in there to vaporize. It needs a chamber where
there is a gaseous volume to receive the moisture/vapor.
It will wait until it reaches that chamber...but if the aux cooler is
after the main radiator...it might in extreme cold ambients...get cooled
below the vaporization temperature
Again...in extreme ambient (cold). If not in extreme cold...then makes
no matter which...before or after the main radiator
The main component of the AFT that is at risk is the additive package
and the friction modifier is the biggie...though am sure there are
other components in the additive package that does not like H2O...
thermally conductive materials...like ATF to Coolant...which is a liquid
to air heat exchanger. Laws of Thermal Dynamics...and with more
efficient liquid to liquid...less surface area needed...lower GPA...etc
Moisture in ATF creates acid over time and accelerated with heat...but
that heat is the way moisture is vaporized out. Preventing moisture
intrusion is the first and best way to manage this
Most all of today's automatics have a better closed venting system, so
humidity intrusion is not as high, but it is still there
As I said earlier:
"....Almost semantics...whether before or after the main radiator in
'most' conditions...but in very cold areas...it may not get warm
enough to vaporized that moisture....which has a high change of
turning acidic to rot out parts of the tranny innards...."
In extreme ambients...with the ATF external aux cooler AFTER the main
engine radiator, will have the AFT cooled down too low and out of it's
temp range
This is why I think installing the ATV external aux cooler before the
main radiator in extreme ambients will warm or heat up the AFT
In the closed metal tubing and synthetic tubing...there is no 'air'
pocket for any moisture in there to vaporize. It needs a chamber where
there is a gaseous volume to receive the moisture/vapor.
It will wait until it reaches that chamber...but if the aux cooler is
after the main radiator...it might in extreme cold ambients...get cooled
below the vaporization temperature
Again...in extreme ambient (cold). If not in extreme cold...then makes
no matter which...before or after the main radiator
The main component of the AFT that is at risk is the additive package
and the friction modifier is the biggie...though am sure there are
other components in the additive package that does not like H2O...
