I have a 1995 ford taurus se, it has a transmission leak, me and my dad arent completely sure whats its caused from we jacked it up yesterday and saw that the the pan was a little loose but we had tightened it and put more fluid in. I checked it today and it still has a decent size leak, it seems as if the leak is really bad on the left side of the car right next to the wheel, any idea what to look for here?

Take a close look at where the drive shaft on that side, goes into transmission. There will be a seal that is attached to transmission & it's a good possibility that the seal is worn or damaged and leaking from there. Wipe it good and clean around that area, then take a short drive & re-inspect for leak.

Check all the oil cooler hoses They come out of trans and go to bottom or side of radiator You need to clean all the oil off everything with degreaser the hose it off Jack car up on axle stands and run it in drive at idle and see where it's running out of. MAKE SURE car is secure on stands and can't fall off !!!!!!!!!! consequences can be fatal