[TR] to use gasket sealer or not

[sujit roy]

I was at a tune and tech session some years back where the garage owner
rebuilt a gearbox. Whereever a gasket went, the guy also applied some gasket
goo on each surface to be joined.

What's the general consensus of the list with regard to using or not using
gasket sealer/goo?  I didn't apply any goo to my diff casing when I replaced
the gasket, but it leaked and still does.

I need to replace my oil sump gasket on my Stag and am hedging towards using
some.

Sujit