Go slow. Don't take the WHOLE thing apart. Just repair the oil cooler first and see what leaks. The 350 tends to have problems with the o-rings on the oil cooler line. Repair that first if you aren't absolutely certain that oil isn't just leaking on everything else from the cooler. On the other hand, if you're ABSOLUTELY certain that you have to replace the oil pan gasket, you'll need to raise the engine to replace the gasket. To raise the engnine, pull the motor mounts and lift the engine 4 to 6 inches, then you can pull the pan bolts and drop the pan.
tranny cooler lines or tranny cooler blew up inside rad
You have a leaking transmission cooler, usually part of the radiator. The transmission fluid is mixing with the antifreeze turning it pink.
more than likely, tranny cooler lines leaking or oil leaking(something is most likely leaking onto exhaust)
Freon cooler is leaking from A/C system.
Bad seal? Leaking cooler line?
If it is leaking, then best to replace it.
The transmission cooler (possibly part of the radiator) has failed.
Failed speed sensors, leaking cooler lines, or a leaking solenoid pack.
If you have an oil cooler, it's possible that the lines have become rusted and are leaking.
your oil cooler is leaking
I take it that you mean that it's leaking water and not exhaust gasses. If it's the body of the cooler pipe that's leaking, then you'll have to find a good stainless-steel welder to repair it, or get a replacement. But if it's just one of the pipes to it, then replace both pipes whilst you're at it.
The AT oil cooler is in the bottom tank of the radiator. If you are seeing oil leaking from one of the lines from and to the transmission connection could be loose.