BXProject

Radseal is shit. And NEVER use stop leak. all it does is bung up the rad and make matters worse.
K-Seal stays liquid and circulates freely aorund the cooling system until it finds a leak, then seals said leak.

What he said + for diesel hg's, Wonderweld has served me well for the last 20 years or so.
You must flush the system and don't put any antifreeze in for a month, though.

wonderweld?
Tell me more!
Never heard of it!

Err... what's to tell...I mean it's specially formulated to repair even quite large cracks in CI or ally heads and blocks. Not really for rad or pipe keaks.

Another Kraut invention I'm afraid! I havn't had cause to use it for about 10 years now and I think it was bought out by someone else so probably goes under another name now although I'm not sure. Google may know more

It was really putting off the inevitable, but you would get upwards of 8000 miles out of it.

hhmm, I'm off to google!

K-Seal, one big problem, it never fucks off! I put some in the TD, and i still have bits of copper floating around the valver engine! Grrrr. I've given up trying to flush it out to be honest. But it did give me enough time on the TD to do another 2500 miles with knackered block! Well worth the money.

Know what you mean! I've never bothered trying to get rid of it.