Many years ago, in my ill spent youth, I raced hydroplanes. The propellers were made of steel
that would rust between races. I started coating the prop with Never-Seez after each day of racing
. When the boat would come out of the water
after the next day of racing
, there was still a thin coat of the grease on the prop. The boat had been going close to 100 mph and I can't remember how many thousand rpm
the prop was spinning but it was a lot. Years later I thought this might be a good way to keep growth off my slow turning propeller
. I coated my prop with Never-Seez during a haul out
. I dove on it a few months later and there was no grease left on the prop. I don't think grease is the answer.