Adding oasis transfer fluid?

[Chuggs]

It brown and yucky.

Sometimes I change things out of guilt. Coach is 9 y.o. Today! CPU started 2/1/2016. I figured I was close enough to Elkhart. May as well pick up fresh fluid. I'll do it this year when doing my annual service chores.

Yes...we probably have less furnace use for Oasis...but as far as Oasis overall --- I do love hot showers!!! Until we put the coach in the service center this week...we have used Oasis a lot on this trip. -15c at times...so, no heat pump. I think I read 66 hrs on this trip for the burner hr meter. We used it a bit back in Feb 21... COLD snap in Dallas that crippled their grid. Used the heck out of Oasis. I think we're at 622 hrs on the burner... no way to count the AC1/2 or pump hrs.. Replaced zone 2 this trip...last of the OE pumps. All three are replacements at this point.

 

[Neal]

I asked about doing this I think it was 2 years ago, ITR said probably too soon. I think it's approaching time for me as well. I prefer to keep things working in tip top shape and not wait for failure or a more expensive result. I use OASIS a lot, some know I have a thing for ice cold RVing...ugh...not anymore, so it's going to go on my list probably for 2026.

Where did you get that and how much did a container cost? Is that a 5 gallon container?

The other thing I probably need to do is figure out the fittings going into the top of the OASIS unit that are quite corroded. They need to be cleaned and/or replaced and look like a good point of failure. I can only wonder about any fittings I don't see. Anyone have a schematic of the plumbing and if there are any fittings in other locations?

 

[Chuggs]

$124.75 + tax for 5 gal pail.

Erin Manoloff
Office Manager
Century Chemical Corporation
P: 800-348-3505
28790 County Road 20
Elkhart, IN 46517
Office Hours:
M-Th 8am-4pm, Fri 8am-12pm

www.centurychemical.com

 

[Neal]

I'd love a "How To" thread if willing on how you serviced your OASIS system. How do you drain it, how do you get all of that fluid in, etc. etc.

 

[Chuggs]

I found this procedure online. It makes sense. I need to fabricate the hoses and get a diaphragm pump…

 

[gburgman]

$124.75 + tax for 5 gal pail.

Erin Manoloff
Office Manager
Century Chemical Corporation
P: 800-348-3505
28790 County Road 20
Elkhart, IN 46517
Office Hours:
M-Th 8am-4pm, Fri 8am-12pm

www.centurychemical.com

I got mine from Eric when I did my Monaco dynasty aqua hot rebuild.
I just got a quote for 5 gallons of concentrate for $60/gallon or $300/5-gallon pail+ shipping tax etc, so 389.22. Make 15 gallons when mixed with distilled water. will be doing it next month.

 

[Chuggs]

Oasis Fluid that looks like old motor oil.

Draining the Hydronic Heating Module. I checked the pH at 7.44. I'm sure there is more life left in this stuff...but, I want to get this task done. Should keep me out of trouble for a dozen more years.

 

[Chuggs]

A sample drawing syringe is good for taking a sample to measure pH or in this case, drain and flush the overflow reservoir before adding new fluid.

 

[Richpatty]

Wow....that really looks like old fluid. How many hours are on your Oasis? Although I guess hours only includes the furnace.... I don't think mine looks that bad yet. At least not at the reservoir...

 

[Chuggs]

639.5 Hours of Burner operation. Nothing else really has a way of tracking. Label tape keep track of my involvement. I was shooting for the routine mx on a 200hr basis...but got ahead due to our long trip last summer/fall.

 

[Chuggs]

The reservoir only gets doses when expansion takes place. Diluting the fresh fluid placed in the reservoir. Best to take a sample from the radiator cap on the hydronic heating module when it has cooled down to ambient temperature. That fluid runs thru the arteries of the system day in and day out.

 

[Chuggs]

All in all the procedure I posted ealier worked.

I found the hoses to the hydronic unit impossible to remove. I cut the hose just above the barb...and used a razor knife to cut and peel the stuck on hose material to prepare the barb for hose reinstallation. Hose has enough slack to accommodate this if you find it necessary.

I performed two fresh water flushes... the first ran clear for a while...but when blowing out the system with air...more semi-grundgy color appeared...so I flushed again with fresh water and then blew out with air a second time. Much cleaner.

I wound up with probably 3 or 4 gallons of left over fluid... I didn't put all of the third 5 gallon pail in my storage container... so a couple of gallons were pure...and and some left in the recirculation well...it has a tiny bit of discoloration compared to brand new fluid...but it will be plenty to top up the reservoir as needed. Usually go thru some everytime I replace a loop pump.

Tomorrow it's off to the the local hazardous waste place... probably have 22 gallons of spent coolant and water mixed to dispose of. I'll give the hydronic unit a level check again tomorrow when cooled to see if the tank was truly filled. May need a little top up.

 

[Chuggs]

Clear tubing is a must have. It's pretty important to see bubbles and color change when doing the process.

 

[Roadglide117]

ITR told me that color doesn't mean it's old. Color will change with different types of hydronic fluid added.

 

[Roadglide117]

What is the procedure to flush system out?