Youv'e never lived

, bloody horrible stuff, it is exhaust repair putty, used to use it on a split seam on my polo exhaust every year to get through the mot. Smear it over the hole when cold, start and leave on tickover for 30 mins, no more hole. Not great as a good permanent repair, but fine for bodging until proper repair, might fall out after a few weeks, just put some more in, be carefull not to squeeze too much througgh the hole. Used to be abou 3 quid from pretty much anywhere that does car stuff.