Winterization: am I missing something?

[DeanOnTheRoad]

It's a 2016 Forest River Salem, 27DBUD. I've emptied all tanks and the water heater. I think I've closed the lines to the water heater and turned them to the by-pass line (please help confirm this. see picture) - is there anything else I need to do before pouring in the antifreeze and running it through the system? I do not have a air pressure hose and hoping to go with just the anti-freeze method. I'd rather DIY this than bring it to a service center. Thanks for any advice.

 

[Kevin D Pem]

Looks right! I assume you have opened the low point drains. If the answer is yes then plump away! Your pink stuff is safe anti freeze. A little water will only serve to raise the freeze point a little!