Boating How-To’s - Anti Seize or Moly Grease

Antiseize or Moly Grease for the shaft splines when dropping lower unit to change water pump?

Used it for years on my Suzuki outboard. Never seize would be there every two years when I changed the water pump.

I put a thick layer of grease on the splines and a thin layer down the whole shaft to prevent corrosion. Anti sieze is a metallic base and am unsure how it would react in a saltwater environment

I just put some blue Yamaha grease on the splines and shaft as well as the bolts. Works well.

I usually use never seize, but any good marine grease will do the job

I did a search a while back, I was surprised that there was no real product made/marketed towards Marine applications. Maybe there is I just missed it. This is a good topic because I recall reading the info on alot of these products and I think NevRsieze is one of the few products that "mention" anti-corrosion but doesn't specifically say it's Marine rated.
I've always wondered about Nik-a-seal. A Nickel based nevrseize, it's got to be prone to some galvanic action.

Loctite makes a marine use anti-seize.

Never Seez Mariner's Choice

I wouldnt use anything with copper in it, copper and aluminium dont play well together

I'm gonna look into it.
Thanks

There is non-metal based never sieze, made with graphite (I think). believe it is N5000

What about that whiteish clearish stuff got PTF in it? I think it's a thread lubricant.

green Merc grease

blue grease

Used white lithium grease for years but switched to blue bearing grease for better corrosion protection on the shaft

OMC/Bombardier triple guard grease (blue stuff) for the shaft splines and OMC gasket sealer for the bolts that hold the lower unit on, it will keep the salt water out of the threads and the bolts will come right out. Every few years I break loose the bolts that hold the upper and lower together on my Cobra drive and re-apply that stuff, the bolts come right out even after 6 months sitting in salt water. Those 2 things, the grease and the sealer work very well in salt water. No where in any of the OMC literature and shop manuals was any anti seize ever recommended, only the grease for splines and sealer for bolts.