water tanks - do they give "sloshing noise"

Why not put it underneath? You will still get some noise depending on how full it is.

I would change my position from across the seats to using the lay-back seat. That way the car would not rock as much and you should not drive the missus mad with luck.

Give it a go and lets us know if it works. Cheers Tony

Gidday

I have a 60L baffled tank sitting where the back seat once was. Never heard much sloshing.

A mate of mine has one of those bags you talk about, but the noise has never been an issue.

Regards

Kim

pling,
I have a ORS 60 lt stainless steel tank behind the back seats on a GU Patrol and have never heard any sloshing sounds.
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As others have said - the sloshing sound is a result of air in the tank - whether its bladder type or tank type - ( my water bed sloshes also until i get all the air out then is silent)

Baffles in a tank will slow the water down in its movement - but will still give sloshing sound ....

also be aware Stainless steel is a brittle steel - why do i mention it ? when the tank flexes with the weight of water movement - it will eventually crack the steel especially near bends where the tank is already stressed - i have seen MANY tanks about 1 yr old cracked all over and there only 20-50 litre tanks

Just be mindful of this as nobody will tell you this when they happily take your $$ from you


Boc

hi pling
give your missus a set of ear plugs and a muzzel or trade her in
lol
cheers

Had a 50 ltr plastic baffleless tank behind back seat on the 80 series and yes it sloshed. Yes you could hear it when radio/cd was off. Yes it was sometimes annoying. But we lived with it for many years. I imagine a ss one would be worse.