Best way to seal a c20 sump .

[total_vauxhall]

I have fitted a z20let type sump gasket that should be much better during my rebuild but it still leak all around the gasket . Has anyone found any good sealant that actualy works

[millworm]

I use an 8v gasket and genuine ford sealant not had a leak yet. Check the sump for cracks If its ali. Thats what killed my last one