Oasis Antifreeze
2012 Newmar Dutch Star with Oasis heating system. Shortly before coach was a year old I noticed the reservoir in the back (blue(ish) liquid) was down almost to the "min fill when cold line". When we...
Forum Discussion
Sorry to see you're not getting any answers here. I have an Oasis hydronic system in my Mandalay, and I've only had to add fluid (I used Camco boiler fluid, I think) once in 3+ years.
Your best bet might be Roger Berke, the guru of Aqua-Hot and similar systems. I don't think Roger deals with Oasis systems as much, but the design is similar, so he might have an idea or two.
My own thoughts, for what it's worth:
- best case, you still have some air in the lines, which may be working its way out as you top off the fluid and run the system.
- otherwise, it's leaking somewhere, either to the outside (you would need to check every part of the system, including all hoses and blower units throughout the coach), or via the heat exchanger coils into your water supply (though I think you'd have noticed this by now).
Do you have the engine heat feature (called Motor-Aide in the Aqua-Hot units), where you can use the Oasis to pre-heat your engine, or vice versa? If so, I guess that's another possible avenue for leakage.
Good luck -
Your best bet might be Roger Berke, the guru of Aqua-Hot and similar systems. I don't think Roger deals with Oasis systems as much, but the design is similar, so he might have an idea or two.
My own thoughts, for what it's worth:
- best case, you still have some air in the lines, which may be working its way out as you top off the fluid and run the system.
- otherwise, it's leaking somewhere, either to the outside (you would need to check every part of the system, including all hoses and blower units throughout the coach), or via the heat exchanger coils into your water supply (though I think you'd have noticed this by now).
Do you have the engine heat feature (called Motor-Aide in the Aqua-Hot units), where you can use the Oasis to pre-heat your engine, or vice versa? If so, I guess that's another possible avenue for leakage.
Good luck -
