Chevrolet ranger rt Owner's Manual page 80

HOWTO: Setting Up Your Campsite
77
Connected Fresh Water vs. Using your Tanks
There's no real advantage to leaving the water hooked up all the
time - it's easier just to get your hose out and fill your tanks, and
then put the hose away. No leaks, no hose to trip over, no need
to disassemble and store all that stuff when it's time to hit the
road again. In a campground with shower facilities, your water
supply will last for days, and when it runs out you just get the
hose back out, fill it up again, and you're ready for another few
days.
Sewer Hookup vs. Dumping
The advantage of using your tanks for fresh water over a more
permanent water hookup is that you're automatically reminded
of when your waste water tanks are full. When you're close to
running out of fresh water, that means it's time to dump your
wastewater tanks. With a more permanent hookup, the reminder
Filling your tanks
may be waste water backing up in your sink or toilet, which is
not nearly as pleasant. The tank level indicators only tell you to the nearest third what your tank levels are.
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