Loctitie to seal from the outside help...

[Steviesam]

I know there is something out there from Loctite, but cant find it!

I need a sealant that I can out on the OUTSIDE of the sump/block join, that stops a leak.

Been searching for the thread for days where it was mentioned, but to no avail!

[CO2000]

Not loctite but belzona may help.

http://www.belzona.co.uk/prod1k.aspx

[ch427]

probably a chemical metal type product

[Krikkit]

Assuming the area can be cleaned up reasonably well I'd expect Loctite 5910 (£5.50 from Halfords) to stop it. Very good stuff.