Join Date: Jun 2013
Location: Manitoba, Canada
Feedback Score: 0 reviews
I believe salt that comes 'from above' (ocean air salt) and salt that comes 'from fricking everywhere---daily bathing the vehicle under, over, in and around with salt brine water and slush' (snowy areas that dump salt on roads) are two different concepts.
They both certainly take their toll on cars' metal (obviously depending upon a number of other factors), but each attacks 'from a different flank', to use a military metaphor.
I have seen many rusty, rusty Subarus here in Canada on the prairies, and I have no doubt that if their owners had applied an effective rust preventative each year, those cars would not be disintegrating before their owners' eyes. The operative word, there, is "effective", and I have no experience with after market products to say anything about that.
What it does demonstrate, however, is the relative ineffectiveness of factory rust-proofiing in the long term, especially for car owners who care for every other part of their vehicles, only to see them become condemned (fail provincial / state safety checks) long before the engines die.