Black and gray tank question

[TEO]

Picking up my new to me 2018 Newmar Bay Star 3124 Saturday.
Never owned a motorhome before and will be doing some short 2 or 3 day trips just to get familiar with everything until I can get some time off later in the year.
My question is should I empty the black and gray tanks after short trips?
If it matters there will probably be 2 or 3 weeks between trips.

 

[Rosy]

I would empty them at the end of every trip and flush the black tank. Helps cut down on odours. I'm also not sure if they're designed to be full when traveling.

 

[Rollin Ollen]

Picking up my new to me 2018 Newmar Bay Star 3124 Saturday.
Never owned a motorhome before and will be doing some short 2 or 3 day trips just to get familiar with everything until I can get some time off later in the year.
My question is should I empty the black and gray tanks after short trips?
If it matters there will probably be 2 or 3 weeks between trips.

One gets a better flush with a full, or near full, tank. If you can add as much water as you can to the black tank before you dump it will help get rid of any sludge even if you have a black water rinse. Dumping a tank with not much in it will allow sludge to build up. If there is a water seal in your toilet and your p traps are full, you shouldn't have to worry about any smells. I would wait until you have something worth dumping.

 

[CaptainGizmo]

Don’t stress about it. Use a top grade tank additive. I’ve become a believer of West Marine Tank treatment and my combined grey/black tank has contents all the time. It’s an incredible product for a great smell. I’ve used Unique DigestIt enzyme treatment as well with good results.

With. 145 gallon tank, I make sure to get it pretty full before dumping.

I feel seals stay more pliable and valves work better when they stay moist.