Long as H2O has reared it's ugly head in the engine bay, here's a New Year's hint for ya:
Your household water heater (it's not a hot water heater - if you got hot water, why would you need a heater?) has a drain at the bottom of the tank, specifically because heating the cold incoming water causes the mineral content to precipitate out (direct contact with the heater), which precipitated minerals always collect in the bottom of the tank, allowing rust to form and propagate - rust-related leakage is the usual failure of water heater tanks, more obvious because the H2O volume is at city-water pressure - that drain spigot is intended to enable flush-out of the mineral bits and pieces at OEM-suggested intervals
I would suggest referring to the instruction pamphlet for drain intervals, but I s'pect it was filed in location #13 shortly before removing the water-heating unit from the shipping container
Us motor-head clean-freaks can therefore clean two birds with one flush: attach your garden hose to that spigot when cleaning mechanical items and the hot water will more easily dislodge and flush greasy\dirty stuff, with added benefit that the heated water evaporates much more quickly than cold water - an initial soak with AUTOZONE engine cleaner in the orange\white container will flush-off as dirty white liquid, such that nosy-nabors won't be referring your name to EPA watchdogs for polluting the drains - the AUTOZONE cleaner with hot-water rinse leaves surfaces squeaky-clean, with no residue
The hot water will not penetrate any of the "weather-pak" sealed connectors in the engine bay, of which there are many and sundry
Cleaning your stuff also flushes the mineral deposits outta the tank, extending the life of your water heater
Enjoy, eh.........
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