Depending wether the line going in has an o-ring or if it is just threaded you will either need to replace the o-ring or use a pipe thread compound to seal the fitting.
check your radiator hoses and change gaskets
Coolant? Bad radiator Radiator has a separate cooling tank (usually at the side or bottom of radiator) for transmission fluid. At times this tank ruptures allowing coolant to get into transmission. Most times causing a transmission failure.
Take it to an oil and lube shop and have them flush the radiator.
Green fluid leaking from a car is radiator fluid. "A professional certified mechanic can handle the repair or maintenance needed to fix this issue."
Fix the cause, or keep adding fluid.
That's automatic transmission fluid , or power steering fluid , so it would depend on where it is leaking from
how can i check the transmmission fluid?
Replaced the pan gasket with a new one.
Your transmission cooler tank (its inside of your radiator) has gotting a leak in it. Your tranny fluid & antifreeze are being mixed with each other. You need to have your radiator fix & a complete flush of both the tranny and radiator. If your transmission has not slipped any you will be ok as long as you don't wait about having it fixed. The longer you wait about having it fix the more damage it can do to your tranny. Your hub that holds your tranny clutches (the band) has a glued sand paper like material on it that the water will harm if trere to long.
Buy a new transmission oil pan gasket before your transmission blows from leaking liquid.
It depends where it's leaking from. I have had two previous cases of my truck leaking transmission fluid and both consisted of the pressure lines not being properly clipped on or a bad hose. It could be a old or faulty gasket inside the transmission box. Either way it would need replacing of the hardware. only way to fix it.
Be sure cooling fan for radiator is kicking in. Since radiator also cools transmission fluid. Also, be sure fluid levels are okay. Sometimes the simple things can cause the biggest problems.