Don't use Boesheild T-9 on anything that will be exposed to dirt. I see to use it to lube my traveler (before McLube came along), based on rave reviews by my dealer and a fellow sailor. All it did was trap sand/dirt/road grime, which the traveler ground into a fine paste, and made the traveler stickier than if I'd done nothing...
WD-40 is similar, in my experience. I ruined an electric train engine when I was a kid by spraying that on the wheels and motor.
Mike
From my experience I wouldn't use any of this stuff... for that very fact... it is a sludge magnet.
I had always made it a point to hose off my trailer after sailing as much as the boat... having a pressure washer with the hose to the hot water heater helped Understandably, you won't keep the rust from coming, but maybe retard it some...
I get the fact the being exposed to heat and humidity plays a roll here, but... I think being exposed to the salt air is worse... where my boat a trailer are is right on the ocean..
