I heard last night that you should not use Neverseize on bolts for boats that are in the salt water. Is this true? Is there a better product to keep the bolts from seizing?
If I recall from my nuclear power plant days, Neverseize contains certain metallic compounds which would contribute to galvanic corrosion when applied to metal fasteners exposed to salt water.
Brian is correct. Most anti-seize lubricants contain copper or aluminum, or both. In the presence of moisture, they can do just then opposite of their intended purpose. Alternative is Mercury Extreme Grease (part # 92-8M0071838).
I use neversieze on manifold and exhaust bolts... I am in saltwater, but these bolts are not in direct contact with salt water... I have not had any problems...
I use both Copper and Aluminum based "Loctite" brand anti-seize daily at my profession as an equipment repair tech and always have positive results. yes , I do use it on my boat. This summer I had to remove both B-3 props for repair. I had removed the props a year ago just for maintenance checks and installed them with copper anti-seize on the shafts. When I removed them this summer , the anti-seize looked like new and the props came off very easily. I do boat in both fresh and salt water. I also use it on exhaust manifold bolts. Honestly, I wouldn't think of not using it just because of the results I see daily . Just my .02 cents worth. quote from the label: Loctite C5-A: It prevents seizing and galling caused from heavy loads,vibration, corrosion and temperatures up to 1800d. For use with most metals, under most conditions , including cast iron and steel, nickel, copper, brass,bronze, titanium,aluminum and monel.
Or the Mercury 2-4-c with PTEF which is recommended to be used for prop shaft threads, amongst other things.
