Originally Posted by Transman
Originally Posted by Cab_Burge
Originally Posted by Transman
[quote=DoubleD

Both cooler lines are under pressure at all times when not in park.


isn't it around 30 lbs. or less pressure(maybe 15 to 20 Lbs. confused) to the tranny cooler


My earlier reply was directed at the statement that the cooler lines, if rubber, could be sucked closed.
They can’t because they always see pressure.

You are correct, the lines normally see 15-30 psi but varies.

It would be interesting to see how much flow makes it to the trans for guys that mount their cooler at the back of the car.


while maybe the word sucked is not the best choice - lines fail - if you have worked around hydraulic systems long enough you will see a soft line failure - like a brake hose that fails and blocks flow but does not burst - what happens is the hose breaks down and the oil gets between the layers and literally can collapse the line closed - like a valve