Problem Oasis water heater

[Roadglide117]

Hate to say this but I'm guessing you have a hydronic fluid leak. You should very rarely have to add fluid to your system. We had a slow leak that Newmar techs couldn't find at first. When they changed our black tank sensor system to a pressure type, they went behind the pegboard bay to the tank and noticed damp insulation in the area. They found the leak....
Unfortunately I don't know where your fluid reserve tank is... Ours is in the engine bay.
Here's the fluid that's used in my rig.

Century Chemical Aqua Hot heating systems Transfer Fluid RV

Aqua Hot boiler anti freeze RV heating systems

www.flemingsalesoem.com

A DS friend said not to mix colored fluid. He reported he added red fluid to his and it jelled his fluid. But I've also read that mixing isn't an issue..... All I know is I carry the exact fluid in the link above.

ITR told me it didn't matter, but it will change color more like brown that alarms people

 

[SteveMA]

Check the fittings on the top of the Oasis boiler for boiler fluid (wet or crusted). There is a known problem with these being loose and they leak. We had fluid around the fittings that I would wipe up - after a few times did some research and found that these may not have been installed correctly at factory. Pinching off the hoses and cleaning/redoing the connections seems to have stopped our 'slow' leak. (Prior to this I was adding fluid every few months, but could not find a leak anywhere else)

 

[Roadglide117]

Check the fittings on the top of the Oasis boiler for boiler fluid (wet or crusted). There is a known problem with these being loose and they leak. We had fluid around the fittings that I would wipe up - after a few times did some research and found that these may not have been installed correctly at factory. Pinching off the hoses and cleaning/redoing the connections seems to have stopped our 'slow' leak. (Prior to this I was adding fluid every few months, but could not find a leak anywhere else)

Thanks Steve.....my leak was right at the circulating pump after I changed out pump. Think I was to paranoid how tight to tighten since pump is plastic and it has a brass adapter that screws on. Not leaking at moment.

 

[Steve4059]

Check the fittings on the top of the Oasis boiler for boiler fluid (wet or crusted). There is a known problem with these being loose and they leak. We had fluid around the fittings that I would wipe up - after a few times did some research and found that these may not have been installed correctly at factory. Pinching off the hoses and cleaning/redoing the connections seems to have stopped our 'slow' leak. (Prior to this I was adding fluid every few months, but could not find a leak anywhere else)

Thanks so much for your suggestions!
Since I re filled the system I have been monitoring it as much as I can. Keeping an eye on the bottle fluid level (it burped twice) as well as looking for evidence of leaking along the system.
So far, so good! Kinda wish that the fluid would flow through some sort of changeable filter