cbart72 wrote:
Do I need to dump the grey and black water tanks before flushing the lines? Do you guys think it is ok to let the grey water tank dump onto the ground?
Depends upon where you intend to dump on the ground. If you are in town or a home owners association community or a State Park, it might NOT be advisable a all.
However, if you live in the country (like I do), have nothing but farm land all around you, and cows and horses in the field next to your house, there probably is no harm in dumping on the ground.