Under step 5, check the display dump stations option (the last one on the list). Then when you view the route, it will look like this:
~RV DUMP SITES-indicated by D/S & exit# if avail.
***DISTANCE DISPLAYED IN MILES***
HIGHWAY DISTANCE: 804 CITY DISTANCE: 146
ESTIMATED TRIP FUEL EXPENSE: $223.83
Note: exit numbers with asterisk = estimated
0 0:00 Starting at: I-10 & Kino Pkwy 950 15:50
Start East on I-10 for 480mi
40 0:39 D/S#302 Gas City Travel Center 910 15:11
Does Good Sam have a downloadable software package showing RV Points-of-Interest (POI's) for GPS systems? I've got a brand new Garmin Street pilot 2720 and need a POI package showing RV parks, dump station etc. along a route. Is there any such thing?