car losing water - holts wonderweld ?

[Mike Tomlinson]

En el artículo , Ian Jackson escribió:

Hadn't thought of that. Thanks.

Sounds like a plan.

[meow2222]

Unlikely. You get more chance of a seal with a slow leak than a fast one

NT

[Dave Liquorice]

See other comments about rate of leak and the gunk getting flushed through rather than setting.

Will a modern car pressurise anyway even two hours at idle? I very much doubt mine will but it's a 5 cylinder 2.5 l diesel and produces sod all waste heat at idle.

[Ian Jackson]

Whether at tickover, or when thrashing down a motorway, I would have thought that an engine would reach more-or-less the same temperature*. That's what the thermostat's for. Does your temperature gauge fluctuate a lot?

*If anything, some engines tend to overheat when idling for long periods, especially on very hot days, and when the wind's coming from behind.

[sm_jamieson]

It only started to overheat when it had lost too much water. That's how I realised there was a leak. I am topping up every couple of days, about a litre each time. But I can see no water leaking out anywhere. Simon.

[Dave Plowman (News)]

I'd be surprised if it makes a measurable difference to the hot temperature. But the anti-corrosion properties are very important.

[meow2222]

Its weird what people buy into. Water with antifreeze is less effective as a coolant, not more. It doesnt matter. Lost bubbles are a nonissue. Distill ed water is counterproductive, a tiny trace of scale helps seal things. It just needs water now, antifreeze before it freezes, and the corrosion inhib itor in antifreeze helps prolong radiator life, though is long even without it.

NT

[charles]

and too much scale blocks the radiator and the heater hoses. Been there.

[meow2222]

It does, but you need a whole lot of water changes for that to be a risk.

NT

[charles]

It depends on how hard your tap water is.

[Dave Plowman (News)]

And you need to see what some of those rad sealers do. Saw one heater piped (1/2") virtually blocked after K-Seal was used.

[Adam Aglionby]

Thought these things were aerobic, need exposure to air to cure, but not su re:

`Once the microfibres have sealed, and fixed, the leak a combination of exp osure to an atmosphere, either the external atmosphere or the gases within the combustion chamber, together with the heat within the cooling system an d engine causes the K-Seal formula to cure`

Seen Wonderweld solve a full mayonnaise head gasket on a Rover long enough to sell it, one bottle good, two better...