prop shaft d2 a/c water drip
I am just north of Brisbane.
Its so humid here that they sell a water cooler that has not water pipe connected to it, it just sucks humidity out out of the air up to 20 liters a day.
I would speculate that a constant drip or trickle o water would add up to a fair bit.
And added top that when you stop for a minute all the condensation then trickles out.
This is a real issue here and its an easy fix.
Did you know that its cheaper on fuel to have you a/c on rather that have the window open