Using rad seal, can it cause problems??

[UOcUK Poopscoop]

Does it cause any negative effects in modern cars?

Got a slight leak in the rad on a V reg Astra.

I do mean slight too, just needs topping up a bit every few 100 miles.

Just want to know if adding it will cause any problems?

Cheers.

 

[UOcUK Poopscoop]

I've never had any problems with the stuff and it's helped seal some pretty big leaks on various engines. I can't see how it could block a waterway since they are all minimum 10mm across usually.

What sort of cars you used it on mate?

Thanks for help people btw.