Break, curse, fix, repeat
Join Date: Feb 2007
Location: Bainbridge Island, WA
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Re: Testimonial to lanolin to prevent prop fouling
I had heard this too, which makes some sense given the viscosity of the lanolin when cold. I believe it works partly because it penetrates all the pores in the metal which both prevents growth and helps it adhere. In my case, I applied it in the sunshine on a warm day, and this seemed to work fine. The lanolin warmed up to a nice liquid consistency and I used a putty knife to smash it in and spread it around.
It is really pretty amazing that it lasts that long, but I guess the movement of the water around the prop cannot sufficiently abrade the metal to remove the cold and sticky lanolin.
Then again, we motored around Desolation Sound last summer where water temperatures are over 70 degrees and it clearly did not affect the lanolin negatively, so perhaps water temperatures below 90 or something are not important.
Bainbridge Island, WA
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