your main oil seal on the rear of engine is leaking or the timing cover seal is leaking,
Water can not leak from the rear main seal, only oil. Most likely there is a leaking freeze plug near the rear main seal dripping water onto it.
NO... They are 2 different seals. If the transmission seal is leaking then the fluid color will be RED that's leaking. If the rear main seal is leaking then it will be oil leaking from the engine and it won't be red.
If oil is leaking on a Briggs and Stratton 18.5 horsepower engine, it is likely a seal is bad. It could be the manifold or the bottom seal.
Water leaking from the seal
The front seal is out on your pump. Replace the seal
you have a bad crank OIL SEAL
Heater core leaking? Windshield seal leaking? Door seal leaking? Evaporator drain plugged?
You need to replace an oil seal on the gearbox.
It all depends on what part is leaking what fluid. Brake cylinder would leak brake fluid. Axle seal would leak gear oil.
check your pinion seal
Failed seal.