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Old 04-06-2022, 05:03 PM   #1
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Brand: Thor Motor Coach
Model: Fourwinds Windsport 36R
State: Ontario
Posts: 74
THOR #8513
Holding Tanks 2008 Windsport

Does anyone know if the holding tanks, particularly the Blackwater tank, is make of steel, or plastic or fiberglass?

The reason I'm asking is sometimes when I flush the Blackwater tank with the saniflush, there looks like thin pieces of paints and maybe rust layer of metal at the end of the hose. It could just be residue that was dried/caked on the tank, but I'm worried if it is steel that my tanks are ready to let go

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Old 04-06-2022, 06:34 PM   #2
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
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THOR #7035
Quote:
Originally Posted by CAC Windsport View Post
Does anyone know if the holding tanks, particularly the Blackwater tank, is make of steel, or plastic or fiberglass?

The reason I'm asking is sometimes when I flush the Blackwater tank with the saniflush, there looks like thin pieces of paints and maybe rust layer of metal at the end of the hose. It could just be residue that was dried/caked on the tank, but I'm worried if it is steel that my tanks are ready to let go

Plastic, likely ABS or polyethylene.
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Old 04-06-2022, 07:39 PM   #3
It's 'towed', not toad.
 
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Model: 2018 24.1 AXISSIXxSIX
State: Arizona
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Older RV, with possible tank change.
Open the toilet, thump the tanks bottom with a stick.
You'll know the metal sound.

Are the scraps magnetic?
Poop generally isn't magnetic.

And tank won't
Let go
It'll be a small leak for a long time.
You'll know.
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