the best thing for a swamp cooler leak, is a copper pipe, or Plumbing sealant, its similar to jb weld, only its waterproof, and made for leaks.
No, it can't. Not from the oil cooler.
It can leak at the connections or the cooler itself could have a hole in it.
transmission cooler
Bad seal? Leaking cooler line?
There are multiple locations for which to trace an oil leak. These are the filter mount, cooler hoses, the cooler itself, oil pan and gasket, valve covers and main seal.
The most common leak points are the cooler hoses and the axle shaft seals.
If you run the transmission low on fluid you can cause damage. Fix the leak.
Find the leak source and repair it. Usually the cause is cooler hoses.
There is no one answer. The entire transmission, all trans cooler lines, and the trans cooler all have fluid in them. Anything that contains fluid has the potential to leak anywhere. On a transmission there are a number of moving parts, such as input shafts and output shafts, each with a seal. That is a likely source for a leak, esp given the age of this transmission. Another likely source for a leak is the rubber cooler lines and/or the clamps. But really, the entire transmission body can leak at any seal or gasket. There are literally dozens of opportunities for a transmission to leak. The only way to find it is raise the vehicle and search out the leak.
Depending on where the leak is, if there is a weakness in the 350 it was with the oil cooler lines. It turns out that most of the oil leaks from the cooler lines has nothing to do with seals. It's a problem with the cooler line.
HEadgasket failure, internal oil cooler leak.
Possible trany cooler leak