transmission cooler lines

[ezytiger83]

just wondering if anyone could tell me which line from the radiator is the return line for the factory ATF cooler on the MU? i'm trying to put in an oil cooler, and the chiltons workshop manual i've got is useless.

cheers in advance

[nighthawk]

Hi I have put a comodore oil cooler on mine, it makes no difference which end goes where, cause the oil just passes thru the oil cooler. no resrictions either way

[ezytiger83]

if i'm putting the cooler in series with the radiator, wouldn't it be more efficient on the return line?

[pig75]

Yes it would
As for whitch is return i carn't help

[nighthawk]

So you are using the radiator and an extra cooler? I see, I put one on, cause my radiator I got is off a manual one

[geeves]

Having it in series it shouldnt matter which side is which except for the water reheating the fluid although you would need a big cooler for that to be noticable. Ive always advocated putting the aftermarket cooler in parallel with the factory one for 2 reasons even though it is not quite as efficient. a: If a cooler gets blocked you still have cooling. This is an issue on Nissan Terranos but Ive not heard of it on others even though they are essentialy the same trans
b: the trans wont shift smoothly till it reaches normal temp. It will warm quicker in this configuration as it takes heat from the water .