Yeah I think there is a balanced view between what AA/Permaseal say (I think there err on the side of caution) and using gasket makers only without any gaskets at all (which sadly I have seen done on sump and even head gaskets) - by dodgy mechanics.

I think I will try putting them in dry to start with and keep an eye on any potential problems.

I'll buy some of these Permatex products anyway so they are on hand if I eventually need them.

It's a tough call, especially for crank seals which will be a hassel to redo...but life wasn't meant to always be easy...just most of the time.

Anyone put a rear main in without some sort of sealant - and NOT had it leak oil?