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 Topic: Travelling with full tank fresh water on
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 via mobile 01/10/2024 at 10:14am
Location: Ayrshire
Outfit: Auto2DSleeper+MHs
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Regular question, if you search the forum.
I have a friend who drains the tank before leaving each site because he reckons the water sloshes around & affects steering etc. Another does the same but to reduce weight, to keep within the legal limit. Both fill up on arrival, to 100%, for a weekend, so they’re draining 75% of the tank before going home. I find it wasteful to drain good water away like that.
We have the very same MH, and roads in SW Scotland can be pretty bendy. We fill to 50% max at home & the stability is absolutely fine. We get water from the site tap for drinking (us & dog), we use the site showers (that’s a way to go through your water tank quickly!), so water is only used for cooking & kettle. The tank lasted 6 days recently, the alarm will go when it’s close to empty & that didn’t happen.
Remember, the waste tank size is in proportion & sloshes around (or not) in similar fashion. We have a black canister & empty it daily. A collapsible bucket does the same. A lot of MHs rely on a drive-over drain, but you should consider that a luxury. Emptying it on the hard stand is just not on, I’ve challenged people about it - it was on a site with no drive over, they had no canister & didn’t care.
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2025=3 sites, 5 nights; 2024 = 20 sites / 41 nights. 2023 = 9/23. 2022 = 13/35. 2021 = 11/29. 2020 = 4/20. 2019 = 13/35. 2018 = 20/33. 2017 = 10/22. 2016 = 19/33. 2015 = 15 sites / 27 nights. Didn't count 1976 to 2014.
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01/10/2024 at 10:51am
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20ltr max is recommended by some manufacturers for travelling, extra weight, fuel consumption, etc.
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XVI yes?
As well is two words!
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.
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01/10/2024 at 4:15pm
Location: Staffordshire
Outfit: None Entered
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We travel with just enough water to last the journey (for loo stops) and fill up on site. There will be a tap, might even be a hosepipe on if you're lucky - you just need to ask where it is and fill up before setting up. Keep a 10m filling hose and some connectors for the taps and a watering can in the van and you won't go far wrong.
Wouldn't travel with a full tank - that equates to roughly 100KG so will eat a chunk into your payload for sure.
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01/10/2024 at 5:46pm
Location: Wessex
Outfit: Dethleffs Trend T675
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I would say it rather depends.
Our current moho recommends travelling with 20 litres on board, the fresh water tank is above and to the rear of the rear axle so from a stability point of view it makes sense.
Previous moho's had the tank under the floor at midships, we've travelled with full tanks before or at least partially full, I did use it as ballast when travelling on a gusty day and I think it helped.
What does your manual recommend? It could be there's a limit down to the restraints of the tank (it may come loose in the event of very heavy braking).
Some will quote fuel consumption concerns but 1 litre of water weighs 1kg, so 100 litres is 100kg (about the same as a large adult). 100kg averaged across a 3.5t motorhome is less than 3% so it's up to you whether you think that's a big deal to you.
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01/10/2024 at 8:57pm
Location: Milton Keynes
Outfit: Bailey Alliance 66-2 Motorhome
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The first question is what is your payload allowance? Some modern vans have very small user payloads and a full tank could take you beyond your legal weight. Now if you have plenty of payload, as we did in our last van, by all means take a reasonable amount of water with you to use en route and maybe the first day on site (just in case its raining!) I used to carry about three quarters of a tank of water When on site I used a 10 litre watering can to top up, found it slightly easier than a jerrycan.
David
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02/10/2024 at 5:22pm
Location: Somerset
Outfit: Murvi Morello
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We always fill before leaving home and every few days whenever we can on route but we are very lucky to have a very large payload. We'd rather have plenty than no water than run out and find it difficult to fill up using watering can etc. due to the weight and the placement of our water filler. We use the onboard water for everything as we have an inline water filter fitted. Can see the problem if you don't have the payload though.
Can't say we've noticed any discernible effect on handling or fuel consumption.
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