I dont even hook up the sewer hose until we are ready to leave (unlees its a long stay), then I flush the black tank.
About the only time I dont flush is if it is just an over night and we are headed to another park.
I never put the trailer away into storage unless I flush the tanks first.
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2016 Passport 2890RL
2007 GMC Sierra 1500
Reese 26000 Weight Distribution and Sway Control
Champion 2800/3100 Inverter Generator
American Ranger Auto Gyro
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