Head gasket is a definite possibility.

I assume when you say hoses you mean the radiator hoses. Also check the heater core hoses. They may have a leak.

Does the exhaust have a slight coolant smell to it? Sure sign on a blown head gasket.

Could possibly be a bad water pump o-ring (if it's set up like the 3.0L SOHC v6). Water will accumulate in the valley between the heads and evaporate from there or drip down the back of the block, & down to the tranny.

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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