I have been using the antifreeze in our combo since 2009 and the seperates since 2018. I run a "quick wash" which is the shortest cycle. In the spring i start with a just a water wash cycle then I'll do a full cycle with detergent with the water temp set about 1 bar above hot/cold.
I've never noticed any film from the food grade/safe antifreeze.
I'm just finishing up winterizing our 39DBRS3.
I blow all the lines out first.
Washer, dishwasher, 2 baths, fridge, takes a bit more antifreeze but we haven't had any problems yet. And I recycle the antifreeze that I can.
Recycled antifreeze first is used on the boat and then what is left over from that and the trailer goes in the sprinklers.
Originally Posted by Sundancekid
Okay so we have a 2021 DRV 39DBRS 3
Does your 39 have the half bath toilet?
If so, something to think about. The piping for the half bath is not a downhill run to the tank. It takes a bit more antifreeze to make sure you have enough in the pipe to fill the 'U trap'