Home › Forum › Ask A Member › Proofing against corrosion with threads? › Re: Proofing against corrosion with threads?
Just about anything is better than installed dry. The important thing to remember is not just to coat the threads that are actually engaging into the metal, be sure to coat the shank/threads all the way up to the bolt/screw head. Oftentimes the salt builds up in this area and seizes the bolts/screws. Sounds like you have fresh water motors, but it is important to clean off the complete bolt shaft and the unthreaded hole with a round file, then run the appropriate tap through the threads. Cleaning the bolts/screws up on a wire wheel is usually all that is needed instead of running the bolts/screws through a die.
The OMC gasket sealer in a can is ideal for corrosion protection, the brush applicator makes it easy to apply. The OMC/merc grease would be my next choice. The OMC 847/type M would work, but is messy. I have never had trouble removing any hardware once I have cleaned it and treated it with gasket sealer, and salt water engines are all I ever worked on.