Chemweld

skippy33, Jan 22, 5:23am
hi all, been told wife's car has blown head gasket, told cheaper to replace engine, don't have the $ to do at the moment, has anyone used the quick fix in a bottle, have had differing feedback on it, opinions please.
toyboy3, Jan 22, 5:26am
What caused the gasket to blow ? As that still needs to be attended to !
skippy33, Jan 22, 5:44am
,radiator cap apparently was rooted causing it to overheat, have brought a new one.
mojo49, Jan 22, 6:14am
Used Chemiweld in an L300 with cracked head for 3 years no problems. The trick is to get the system sealed using it per instructions and then run the radiator with no pressure on it. I simply cut off the overflow return valve on the radiator cap so that the radiator was always full and the overflow bottle level rose and fell as the coolant temperature changed. Ignore the experts who will say the car will overheat. It will not overheat unless there is another problem will the cooling system or unless you drive it really hard in very hot conditions. If you cannot afford an engine change then this is a low cost effective solution until you can afford a permanent repair, such as replacing the car.
jason18, Jan 22, 7:19am
I have used chemiweld with great success too.
robinm1, Jan 22, 7:35am
I have had better results with copper based sealers such as Rislone liquid copper, available from SCA
gmphil, Jan 22, 8:01am
ive used it ! sold car 4 years later seem ok
petermcg, Jan 22, 8:19am
Im not sure if the radiator cap can cause overheating, although it might have built up to much pressure causing a leak and the lack of water could cause overheating
petermcg, Jan 22, 8:23am
And in saying that I let my L300 run low on water cause of a broken water pipe and it started to heat and blow severe steam out the exhaust. I used chem weld with total success,,
esky-tastic, Jan 22, 8:39am
If it was letting the water blow up everywhere it would do the trick.
kazbanz, Jan 22, 7:23pm
taking note of who not to trade cars in from
purple666, Jan 22, 11:24pm
Has to be worth a crack, and as in post #4 follow the instructions closely.
mopeds, Jan 23, 4:21am
I used liquid copper on an audi, it fixed the gasket but sealed the thermostat shut, had to back flush to release it, all good since, saved $$$
gammelvind, Jan 23, 5:19am
It's ok Kaz you are safe, they are all driving VW's and Fiats.
ozz1, Jan 23, 5:49am
as long as you are going to keep the car. AND not try and onsell it to some poor unsuspecting person. worth the effort. but try RISLONE.
mojo49, Jan 23, 6:00am
So kaz what will you give her -indoors as a trade-in for her 1998 NZ new 3.0L V6 Peugeot 406 in immaculate condition. (No chemiweld) She does not want another Euro!
xs1100, Jan 23, 8:28am
had great success with it on a 8v mazda 626 yrs ago but follow instructions put it in run it up for a week and drain and flush
supernova2, Jan 23, 8:52am
SealWell from BNT works and its low priced as well. No need to flush out the anitfreeze either.

Give it a go if it don't work all you have lost is about $10
lookoutas, Jan 23, 6:47pm
Chemiweld works on cracks, but doesn't seem to like sealing blown gaskets operating against compression.
ozz1, Jul 25, 10:15pm
good quote. there isnt much that can get into cracks when pressure is trying to force it back out. comes down to where water is going and why?. a crack on an inlet side. maybe. a crack on an exhaust side.?. no. if its a gasket then prety much . NO.