Originally Posted by mike837go
Right idea, wrong timing.
The pump has to be on with the siphon hose into the antifreeze jug when you push open the check valve.
That'll fill the line to/from the check valve with antifreeze. Stand clear unless you want to be spritzed by a bit of water, then antifreeze.
X2. If you have any anti-freeze left, it won't take much to finish the job. If you don't have any left, buy another gallon. That will be a lot cheaper than fixing the damage from that water line freezing and breaking. And by the time you notice it's leaking next spring, there will be water everywhere inside your trailer and underbelly.
It's worth the cost and little extra time to do it right!
2015 Jay Flight 32RLDS Elite
2012 Chevy 2500HD Crew Cab LTZ (6.6L Duramax/Allison)
Equalizer Hitch (1200# bars)