The only thing behind the motor is the tstat housing. You have the lower rad hose and the heater hose connections. the Upper rad hose has a o-ring anf heater hose has a gasket not know to leak but is a distinct possibility. hard to see here though. best to get a pic from the rear center right under the vehicle to get a clear idea. still its hard to see. may have to run you hands up there to feel each connection. (cold -
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What I did was run a video from under the car to see whats leaking. My heater hose connection was leaking at one time.