i said usually chancers! don't take it as a personal insult m8
i didn't get burned, it took a couple of hundred notes and a day or so to put right but at the end of it i knew the job had been done properly.
i knew it was k seal because i've seen it before when it's been at work for a while curing problems. usually when i was working in the scrapyard. we used to get a couple of engine swaps a month after peeps had been sold some miracle cure instead of fixing it. unless the cooling system is spot on before you dump it in you will get problems(which sort of defeats the object).
there are replies to two different peeps there (im on my ipod so not quoting)