Mind has two values by the water pump you have to which them first one open the value from the outside then the other will shut off the fw tank. then if you have 3 values by your hw then flip the top and bottom and turn off your bypass. Then you need a hose to hook up from antifreeze inlet on the os of trailer stick it in the bottle then turn on your water pump.You may need 2 gallons to do it
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2019 Flagstaff 26 RBWS
2015 GMC Sierra 1500
2019 camp 17 nites. Bill,Alley and are two kids Sierra,Ivy. 2020 camp 9 nites