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1) Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; 2) Roads in Minnesot

1) Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; 2) Roads in Minnesota are not destroyed by salt + plows. Roads are destroyed by frost heave and by heavy trucks traveling on them as the ground freeze gradually melts in the spring. Locales in Minnesota have "road restrictions" in the spring to try to minimize the latter effect - that is, dump trucks/semis are limited to about 50% capacity per axle to try to minimize the damage done to the roads they drive over.

throwaway0a5e 5y ago
>Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; It's better than it used to be but anything in the same plane as the tire rotates is still doesn't last. Rust also starts at the holes in panels where plastic trims attach and it's not uncommon to find 5-10yo vehicles that are missing large chunks of the rocker panels or areas around the rear perimeter under the bumper cover. Anything that routinely sees a gravel road will be destroyed in half the time.
pengaru 5y ago
> 1) Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; If only the primary corrosion problem on automobiles were the painted unibody, which still is only a minor scratch or collision-repair away from devolving into the same rotting trash. Especially with newer vehicles employing more aluminum parts, often fastened using steel fasteners if not to steel surfaces, you get plenty of galvanic corrosion at these critical junctions. The dissimilar metals exposed to saltwater electrolyte is basically a battery. And this is occurring out of sight unless you get under and wrench on your own vehicles, where there's substantially more exposure to the road salts.

throwaway0a5e 5y ago

>Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; It's better than it used to be but anything in the same plane as the tire rotates is still doesn't last. Rust also starts at the holes in panels where plastic trims attach and it's not uncommon to find 5-10yo vehicles that are missing large chunks of the rocker panels or areas around the rear perimeter under the bumper cover. Anything that routinely sees a gravel road will be destroyed in half the time.

pengaru 5y ago

> 1) Cars have had baked-on finish for 20+ years and generally don't rust through anymore, even with the ice melt put on roads in Minnesota; If only the primary corrosion problem on automobiles were the painted unibody, which still is only a minor scratch or collision-repair away from devolving into the same rotting trash. Especially with newer vehicles employing more aluminum parts, often fastened using steel fasteners if not to steel surfaces, you get plenty of galvanic corrosion at these critical junctions. The dissimilar metals exposed to saltwater electrolyte is basically a battery. And this is occurring out of sight unless you get under and wrench on your own vehicles, where there's substantially more exposure to the road salts.