Are any greases not dielectric, or are some labeled as such because that is
the only quality they have , i.e., no lubricating quality ?

I have used a dielectric grease where it was suggested to me, to ensure a
good electrical connection for a ground, or so I thought.

So when I secure a zinc to my saildrive should the bolts be coated with
dielectric grease, or any grease, or no grease ?

The shop manual for the yanmar sd20-31 drives suggests using threebond
1215 on the bolts for the zinc... There should be full contact between
the zinc and the saildrive anyway -- I always hit both with a bit of
emery paper before I put them together.

-- Tom.

Thanks Tom, I hadn't seen this. I haven't heard of three bond before either,
but will check it out.

wrote in message
oups.com...
The shop manual for the yanmar sd20-31 drives suggests using threebond
1215 on the bolts for the zinc... There should be full contact between
the zinc and the saildrive anyway -- I always hit both with a bit of
emery paper before I put them together.

-- Tom.