slight radiator leak cures

j2b

i have slight radiator leak and was told instead of buying new radiator try stopleak or radwelds radiator fixer. Just wanted to know if any one has tried and tested these to be good fixes for leaking radiator.

Ezmondino

Worked fine the one time I had to use it.

NeverAgain_2

Yes, they can work, and you've nothing to lose by trying one.

Years ago, the best was Barr's Leaks, not sure if it's still available.

Whichever one you use, follow the instructions, which will include putting the heater on - if it isn't already in this weather.

You may need to give the car quite a long run for the potion to do its job.

Hammyman

j2b wrote: »

i have slight radiator leak and was told instead of buying new radiator try stopleak or radwelds radiator fixer. Just wanted to know if any one has tried and tested these to be good fixes for leaking radiator.

Please don't. Radweld etc have a nasty habit of blocking up all the narrow waterways in the cylinder head and the heater matrix.

Just get a recon radiator and do the job properly. They're around £100.

TiTheRev

Hammyman wrote: »

Please don't. Radweld etc have a nasty habit of blocking up all the narrow waterways in the cylinder head and the heater matrix.

Just get a recon radiator and do the job properly. They're around £100.

+1

At best the Bars or Radweld stuff will provide a temperary fix, and as posted above, could block unnecessary parts that shouldn't be blocked!

A recon rad is as good as new, fully pressure tested, and will be as good as new for half the price! (Search for Serck Marsdons)

Hintza

Where is the leak? If in the matrix just clamp it with a pair of pliers that should sort it out..

bigjl

Try K-Seal, much better product, though I have only used it once, for a small radiator leak caused by a screwdriver, don't you just hate it when you buy a car at an auction and the losing bidder gets the !!!!.


Radweld and Bars only work for a short time, I had a Ren 21 that had all kinds of water leaks from a stupidly expensive metal pipe on the front of the engine, I used to add it all the time and it would fix it for a week or so, when using the car for work so a weekly mileage was 1000 miles, eventually made a "permanent" repair with some chemical metal and some jubilee clips. £100 for a pipe in '97, oh yes Renault know how to charge for some parts.

optimus_primera

break an egg .......

mikey72

bigjl wrote: »

Try K-Seal, much better product, though I have only used it once, for a small radiator leak caused by a screwdriver, don't you just hate it when you buy a car at an auction and the losing bidder gets the !!!!.


Radweld and Bars only work for a short time, I had a Ren 21 that had all kinds of water leaks from a stupidly expensive metal pipe on the front of the engine, I used to add it all the time and it would fix it for a week or so, when using the car for work so a weekly mileage was 1000 miles, eventually made a "permanent" repair with some chemical metal and some jubilee clips. £100 for a pipe in '97, oh yes Renault know how to charge for some parts.

You don't get a small leak with a screwdriver, you get a hole.
You probably missed it and didn't notice until it had warmed up and pressurised the system.