Dewinterized but water is still pink
Newbie motorhome owner, first time rver. I bought a '94 Fleetwood Pace Arrow that's in really good shape. I'm teaching myself the ropes, have the original manual but it's not specific to my floor plan. I flushed the coolant out of the water lines but the water is still coming out pink so I think it sat winterized longer than 1 season. I did a high flow flush, double checked the water heater, I'm gonna do the baking soda solution to neutralize, but I also read that if there is a built in in-line water filter that there is no getting the coolant out of that and it just needs replaced. Thing is idk if I have one, or where to find it. The manual is pretty vague about these things, so I was hoping some more experienced peeps could give me some pointers. Thanks in advance ☺️