My guess is Bad hoses to heater core or an improperly seated O ring in rear of water pump.

There's a UV dye you can buy along with a UV light for ~$20 at most parts stores that allows you to see where the leak is coming from.

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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