wondering if we should start another thread -
flying j charges 10 bucks (per dump) now (no longer free, even when fueling)
the problem w/ flying j - it works if your REALLY full, but there will be people waiting behind you to fuel up (assuming you use the RV lane & not the truck lanes).
i always felt rushed when dumping at Flying J...and i never had time to rinse my tank.
lots of state rest areas (usually at the entry & exit of each state/line at a minimum) have dump stations (weve found some, in florida were closed)...but along our path between texas & virginia there are plenty of rest area / free dump stations....and theres rarely a wait or pressure to rush.
Google
also many (not all) campingworlds have dump stations, which usually dont charge for dumping (even to non-members).
Google
and there are even published books on where dump stations are located (id call ahead where possible just to confirm, and before i went out of my way).
gray water (assuming its just wash/soapy water and NO BIO/WASTE) can have an odor to it...at least mine does...and if dumped on the grass in close quarters (at night is best) it could smell....but a little watering in, is all you need to kill the odor....i DONT do this at campgrounds.....and i NEVER do it during the day light (too many folks would think you were dumping black water).
for your dumping (distance at home) - most would recommend a
maceration pump set up....ive heard of some dumping/pumping w/ a maceration set up as far as 75 or more feet (up hill)....and all you need is a garden (size) hose.