Barrs leak, A big no no?

[Gruss]

I found a really small pin hole in my rad. ( I think it got nicked when changing the water pump, but can't prove it). Can I add a dose of Bars leak to fix it, or would it plug up something I'm not thinking about? Thanks

[3ddiver]

Two points of view on this.
1 They sell a ton of it and it usually plugs up the holes especially if they are small.
2 I dont like it because it is made to plug up leaks. I think it has something to do with air hitting it but what is to stop it from plugging the rad cores or heater core. I have taken may caps off and we can tell right away which ones have had stop leak and almost all of them have additional problems. Granted most of them are a POS to start but that is just my observations.

[BigRed]

It would be smarter and should be fairly inexpensive to take it to a radiator repair shop and get it soldered up.

You run less of a risk of damaging or clogging other cooling components...

[mrnecsteve]

If its accessable, its not really that difficult to repair on your own,especially if its just a pinhole.

[95dieselsmoke]

i just went through this. went to local auto parts store and got a "radiator repair kit". $9 out the door, comes with patch, exopy and sand paper. job complete, leak proof for months now.

[buckarootrucker]

I have a Kenworth with a 60 series in it, with a little over 800000 miles on it the head gasket started to leak(out, not into, the crankcase) used lots of bars leak. KW mech said might as well run it as long as we could till it was time to inframe. Bout 935000 lost an injector o-ring, all that fuel in the cooling sys CLEANED the bars leak out. Engine made it to 953000 miles

[Diesel Freak]

I've used it with success in a very old truck. I would only use it in emergency case with my PSD. Locate the leak and try to patch it yourself. Try some pepper if it is that small of a leak. I've seen it work! Good luck!!