Oasis Question

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Joined
Dec 5, 2019
Messages
66
Location
Where ever we park - Myrtle Beach Currently
RV Year
2019
RV Make
Newmar
RV Model
Ventana 4037
RV Length
40
TOW/TOAD
2018 JL Wrangler Sahara
Quick question for those that have the Oasis for a few years. Just checked my overflow (last time was early September). Level was down about an inch from the Cold Line. Added enough fluid (Century, Yellow/green) to get to about 1" above Cold Line. It has drop here to the low 40's but still on heat pump only using Oasis for hot water. Also, first time in our year of ownership I have noticed this drop.

The question I have is if this drop in fluid is something to be concerned about or just the nature of the system.
 
Joined
Nov 4, 2019
Messages
755
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Fulltimer
Yes
Think it may be normal but would keep an eye on it. Reservoir has been know to crack and leak.
 
Joined
Nov 2, 2019
Messages
2,562
Location
WA, MT or somewhere else!
RV Year
2018
RV Make
Newmar
RV Model
Mountain Aire 4047
RV Length
40'
TOW/TOAD
2014 Honda CR-V
I see that Amazon has Century TF-1 "heat transfer fluid" for $24.95 a gallon and free Prime shipping. It is the pre-diluted version; just add to the system. Is this what most folks are using? How about the price? I don't find this stuff anywhere locally.

https://www.amazon.com/dp/B01BDWQXM2/?tag=rvf01-20

TJ
 
Joined
Nov 4, 2019
Messages
755
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Fulltimer
Yes
I see that Amazon has Century TF-1 "heat transfer fluid" for $24.95 a gallon and free Prime shipping. It is the pre-diluted version; just add to the system. Is this what most folks are using? How about the price? I don't find this stuff anywhere locally.

https://www.amazon.com/dp/B01BDWQXM2/?tag=rvf01-20

TJ
TJ

That is exactly what I order about 2 years ago at the same price. I still have it and probably have only used about a quart, once the air is out of the system only added a little after pump changes.
 
Joined
Nov 14, 2019
Messages
732
Location
Orinda, CA
TOW/TOAD
2015 Jeep Trailhawk
Fulltimer
No
Yes that is the correct fluid. I have had add fluid to mine about a year ago and it has stayed level although my use is short trips.
 
Joined
Dec 5, 2019
Messages
66
Location
Where ever we park - Myrtle Beach Currently
RV Year
2019
RV Make
Newmar
RV Model
Ventana 4037
RV Length
40
TOW/TOAD
2018 JL Wrangler Sahara
I see that Amazon has Century TF-1 "heat transfer fluid" for $24.95 a gallon and free Prime shipping. It is the pre-diluted version; just add to the system. Is this what most folks are using? How about the price? I don't find this stuff anywhere locally.

https://www.amazon.com/dp/B01BDWQXM2/?tag=rvf01-20

TJ

That is what I ordered and put in my system, couldn't even find it at Camping World
 
Joined
Jul 27, 2019
Messages
3,884
Location
Midlothian, VA
RV Year
2017
RV Make
Newmar
RV Model
Ventana 4037
RV Length
40' 10"
TOW/TOAD
2017 Chevy Colorado
Fulltimer
No
Quick question for those that have the Oasis for a few years. Just checked my overflow (last time was early September). Level was down about an inch from the Cold Line. Added enough fluid (Century, Yellow/green) to get to about 1" above Cold Line. It has drop here to the low 40's but still on heat pump only using Oasis for hot water. Also, first time in our year of ownership I have noticed this drop.

The question I have is if this drop in fluid is something to be concerned about or just the nature of the system.

I think it's normal. I checked mine, it seemed low, I added fluid, it just varies. I stopped chasing it. Now it shows where it should so don't overreact to the level, just monitor and see how it goes. I probably over filled mine and have no idea how it vented it such that it's now in the normal range again.
 
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