Radweld - Opinions

thescouselander

The OH's car seem to be losing coolant, all be it very slowly, and I suspect it is coming out of the heater matrix. The car is on its last legs and we plan to change it in a few months. Also heater matrix is going to be a major job so I'm not even going to contemplate changing it.

I was thinking it may be worth adding a bit of Radweld or similar to temporally address the situation but I have heard these treatments can cause more problems that they cure.

Does anyone have any experience of these products? Should I give it a go or just keep topping the coolant up?

martinthebandit

You'll be fine using radweld, an older car on its last legs anyway, seems suprising to contemplate a more expensive option.

To be honest I would be tempted to try breaking an egg into it first, allegedly it works just as well

Hintza

Chuck it in.

Ranger8

Try this ?
http://www.ebay.co.uk/itm/Silver-Seal-Leak-Stopper-radiator-sealer-sealant-works-/380195408068?pt=UK_Car_Accessories_Car_Care_Cleaning&hash=item58856988c4

s_b

you dont say what car
it might work
it might create more problems
as harry hill says..........................

thescouselander

Its a Relault Megane 1.6 16v

cootuk

Slow coolant loss can also be the coolant filler cap loosing a seal.
Cheap to replace.

Empty_pockets

Nowt wrong with Radweld. You may see a slight increase in running temp of 1 or 2 degrees.

I've heard of the egg trick but never been brave enough to try it!

thescouselander

I went out and got some K-seal - I'll give it a go later.

motorguy

I would strongly recommend this

http://www.ebay.co.uk/itm/K-SEAL-PERMENANT-RADIATOR-HEAD-GASKET-LEAK-SEALER-/260844508807?pt=LH_DefaultDomain_3&hash=item3cbb8b5687

I've experience of using it now on three cars. Works extremely well.

Heres a repair demonstration...

http://www.youtube.com/watch?v=pqfp3PFJQJk

mikey72

Did you get the k seal you can use with anitfreeze, or do you need to flush the system first?