So i had a question about using pepper for plugging up a small hole in my radiator. The hole was bigger but i used sealant to cover it. So far it has worked with no problems but somehow a small pin prick hole was left. My guess is that a part of the sealant had an air bubble. Now ive already ordered a new radiator but wont be able to get it until this weekend and cant work on it until sunday. So im just basically needing a temp fix. Someone i knew suggested putting pepper in there and that itll seal. Ive heard of it before but was also told by some people that it worked for a lot older cars but mine might be "to young" and wont work on mine. My uncle adviced that if i dont use that then get a sealant from the shop but to make sure it was a pellet one. Only problem is all of the places around me have liquid sealant and the pellet one i found online isnt available in these stores. So woupd the pepper work? If not are therre any cheap sealants yall would recommend?

Also before i forget, another question. Once i put the sealant in(pepper or other wise) do i have to top off my radiator or no? I know i have to let it run for a bit.

Thanks in advance

Edit: i drive a 1997 honda civic