[KINGAKNAA]

Does it have any effect? 

[007 or what]

It rusts

[WavieDavie]

That's why people put protective linings in the back of wfp vans.

[brett walker]

Pure water makes my hands rough and my face sore

But im not made out of metal, but nothing a bit of cream doesnt sort out

Brett

[JM123]

it depends what you mean by metal - 304grade stainless steel will corrode very slowly with pure water (I'm talking years upon years) 316Grade has a higher nickel content and will last a lot longer again whereas Iron will rust very quickly.

[KINGAKNAA]

Some good sarky answers there...

Was told pure water was more aggressive and therefore rusting was accelerated. for instance, say on metal door handles?

[mark f]

as someone in the know said it doesnt rust metal it sucks the ions out because it is deionised. Hence why they store the plutonium rods in pure water in power stations, but to you and i the results are the same as rusting. It rusts metal very quickly.

[Clive McDonald]

Salt water is aggresive(brine). Pure water hasn't really been out long enough to assess it's effects on the insides of vehicles. The only comparable trade to us that has been going longer is/are florists. I would be interested to know if florists protectocote as standard, or if we are just oversold.

If it's common practice for florists to protect the insides of their vehicles then we probably need to. I'm not sure it makes economic sence especially on a second hand van.

[Tosh]

Was told pure water was more aggressive and therefore rusting was accelerated. for instance, say on metal door handles?

I don't think it's any more corrosive than rain water, but I can only provide anecdotal evidence to back this up.

I know car valeters use DI water; but if it rusted your car in mega quick time; they wouldn't, would they?

Also you can buy those car cleaning kits that fit on the end of a hose.

The final part is a 'rinse' with DI water.

[Ian_Giles]

The 'rusting' happens because the water gets trapped...say, in an unlined van, or a van with wooden flooring, water seeps underneath, it's stuck there and it won't dry out... by the time it's there it is no longer pure though is it, it is now contaminated with all kinds of muck.

rust is oxidization isn't it, continual wetness + air + metal = corrossion.

This is why in potentially wet areas we have to line our vehicles properly...and not with plywood!

It isn't the pure water that is the problem, any water would be a problem.

Ian

[Clive McDonald]

Correct in everything you say. Totally agree.But modern vehicles often have a six year corrosion free warranty.The metal is protected by paint.
If someones van became a rust bucket in three years (even after they'd aquired it at say 5 years old) then that would be more persuasive. That's why I cited florists.

If you buy an old van who cares?

[Pat Purcell]

We had a 250 us gallon tank of pure water in the back of our van for about 10 years and when we removed it there was no more than normal rust on the floor

[Clive McDonald]

Brilliant, thats what I've been trying to say. I had this row (not with Ian) with a protectocote chauvinist and I made the point that vehicle roofs and body work are constantly exposed to the elements but you don't see people driving around with their heads sticking out the top.

I still accept that everything Ian said is true,

[Spruce]

Hi Curious
The warranty on new cars and vans is an 'anti perforation' warranty. Its doesn't cover rust working it's way from outside in, (ie stone chips for example) but rather from inside to the outside. The onus is on you the owner to include a paint work inspection with your annual service and a separate section of your service warranty book is stamped. No stamps = no warranty. The additional anti-perforation inspection is an additional charge to your service bill. It is highly unlikely that any part of the cargo floor would be included in this warranty either, due to the nature of what users bought it for in the first place - it carry stuff in it which will scratch and damage the protective paint coat. Some manufacturers put a token rubber mat in the back to help prevent damage.

[Clive McDonald]

Point conceded spruce. Also if pat lives in a hot part of the states the water wouldn't sit or lie anyway. As in somewhere like cuba where the vehicles last forever.
If a florist came on and said yeah our vehicles rust like hell I would be convinced that protection is needed. I'm just saying I haven't seen any proof.