Best Place to Put a Transmission Oil Cooler

From past cars, I learned that high transmission fluid temperature kills a
transmission fast. I will be using my auto Geo Tracker for slow off-roading.
I am trying to figure out what is the best way to install a transmission
cooler.

Is it better to put the cooler in front or behind the radiator?
There is 1-1/4" between radiator and engine fan. Is that enough?
There is plenty of space inside the engine compartment. I would prefer to
install it there. Is is ok to put a cooler there along with a fan. Will that
provide enough cooling air. Need some advice please.

Ben

The best place to put the tranny cooler is in front of the radiator because
it draws cool air through the tranny cooler using the radiator fan to
provide the airflow. If you put it in the engine compartment, you'll need
to put a fan on it. It would make more monetary sense to just put in front
of the radiator.

-Bruce

"Benjamin Lee" <[email protected]> wrote in message
news:[email protected]...
> From past cars, I learned that high transmission fluid temperature kills a
> transmission fast. I will be using my auto Geo Tracker for slow
off-roading.
> I am trying to figure out what is the best way to install a transmission
> cooler.
>
> Is it better to put the cooler in front or behind the radiator?
> There is 1-1/4" between radiator and engine fan. Is that enough?
> There is plenty of space inside the engine compartment. I would prefer to
> install it there. Is is ok to put a cooler there along with a fan. Will
that
> provide enough cooling air. Need some advice please.
>
> Ben
>
>

ditto on putting in front of radiator. if you put the cooler behind the
radiator, it will be sucking the hot air off the radiator instead of
cool fresh air. you might force a couple degrees into the radiator when
you do this, because the new cooler will be much more efficient then
your stock in-the-rad-tank version
--
Ben Jerew
ASE Master Technician
New Country Lexus of Latham, NY
Amateur Off-Roader

Benjamin Lee wrote:

>From past cars, I learned that high transmission fluid temperature kills a
>transmission fast. I will be using my auto Geo Tracker for slow off-roading.
>I am trying to figure out what is the best way to install a transmission
>cooler.
>
>Is it better to put the cooler in front or behind the radiator?
>There is 1-1/4" between radiator and engine fan. Is that enough?
>There is plenty of space inside the engine compartment. I would prefer to
>install it there. Is is ok to put a cooler there along with a fan. Will that
>provide enough cooling air. Need some advice please.
>
>Ben
>
>
>
>
Most vehicles come from the factory with the extra cooler mounted in
front of the radiator (when they have one). So that will be the easiest
and most efficient place assuming it will fit. Some people like to
completly seperate the fluid from the radiator. I like to run it
through the additional cooler first, and then through the tank cooler
for a year-round car. If it's pretty cold out, then the cooler will
keep the fluid too cold to operate correctly. Running it through the
tank will provide additional cooling OR it may warm the fluid up,
depending on what's needed. Your radiator is thermostatically
controlled, but your oil is not. Even though it should be.
I believe that's the way my Dodge is routed.

--
..boB
97 H-D FXDWG - Turbocharged!!
01 Dakota Quad Sport, 5.9/Auto/4x4
83 GMC Jimmy (beater)
66 427SC Cobra Replica - Project
66 Mustang coupe - Daily Driver



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There is a little bit of doubt over which mode of installation is
preferable:
series or parallel with the in-radiator cooler.

The arguments might be that the series installation could give lower final
temperatures, but the parallel may facilitate ATF throughput.

My first one was installed in series. I might not do it that way again.

for an older vehicle, i would suggest taking the OE cooler out of the
loop completely, especially if you are worried about coolant getting
into your tranny, which is a HUGE problem.

if you're putting this cooler on a newer vehicle or if you are replacing
the radiator too, then series installation would work great.

however, parallel installation would not ensure you are getting the full
cooling capability of the new cooler.
--
Ben Jerew
ASE Master Technician
New Country Lexus of Latham, NY
Amateur Off-Roader