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Old 05-18-2018, 10:49 PM   #1
Join Date: Feb 2014
Location: Waldorf, MD
Posts: 98
OASIS Low on fluid

Took my 2018 DS out of storage Tuesday. While checking over things I noticed the OASIS Reservoir was down quite a bit. It was filled to the proper level before it went into storage.

The coach and generator are started and the coach is driven around inside a warehouse each month while in storage.

My question is - Is it normal for the fluid to go down over time? For the four months I drove it after the dealer toped off the tank it did not require any additional fluid. Could it have evaporated ?

So far I have not found any fluid either under the coach or inside any of the compartments.

Also on my gas coach I had a Hot Water Tank that I drained each year. With the OASIS do I have a Hot Water Tank and if so where is it located and how do I drain it?

Appreciate all replies.

Dave C

Second MH 2018 Newmar Dutch Star 4018, 2013 Chevy Equinox LTZ, Retired USAF 92, Retired FG 2012. Don't grow up it's a trick.
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Old 05-19-2018, 12:13 AM   #2
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Location: Sparks, Nevada
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I thought mine was low too but when I added fluid and ran the the oasis it just over flowed. So my guess is if you run it will come back up to normal.

Ralph 2017 Newmar Dutch Star 4018
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Old 05-19-2018, 05:46 AM   #3
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Join Date: Apr 2016
Posts: 581
The level should always drop when the system is cold. This is the time to check the level with the lines on the reservoir. If you fill the reservoir within the cold fill lines it should not overflow. If the level does not drop when the system is cold or the reservoir level keeps going up there may be a problem with the tube in the reservoir. The siphon tube in my reservoir came out. I noticed the level going up higher than normal and the level didn't drop when cold.

I added fluid thee times when the coach was new and now I haven't needed to add any in almost a year.
Paul and Christy
2017 Dutch Star 4018, 2017 Jeep Wrangler
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Old 05-20-2018, 08:50 PM   #4
Join Date: Feb 2014
Location: Waldorf, MD
Posts: 98
Thanks for your input. I ran the system for about 2 hours yesterday and the fluid level did come up about an inch. Think I will wait till I can give it a better test before I put fluid in the tank.

Dave C
Second MH 2018 Newmar Dutch Star 4018, 2013 Chevy Equinox LTZ, Retired USAF 92, Retired FG 2012. Don't grow up it's a trick.
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