Originally Posted by Biggles
Is this rusting happening because the affected parts are being put in the sea during launching or is it just the proximity of the vehicle to the sea.
The reason I ask is that I only let my tyres go in the sea. I use a rope when I can't launch the boat without the car getting wet. I don't let the wheels or bodywork get splashed. I can't see any signs of rust but my vehicle isn't 3 years old yet.
My friend who sometimes launches me has a ten year old Toyota Hilux Surf which he doesn't care about getting saltwater on. It regularly gets dunked up to the exhaust and is showing very little sign of rusting. It hasn't failed an MOT either and he's been doing this with that particular vehicle for 3 years now.
The difference is obvious.
Your friend has a Toyota and I have a Mitsubishi!!
But seriously, its sometimes unavoidable to avoid getting water under the back of the car. Our local slip is so shallow that to get the outboard touching the water, the back tyres more or less have to be in the water. all it takes is a small wave and that means the rear body is dunked...
launching to surf beaches from the sand is even worse.
I wish i had gone for the ten year underbody protection now...