A rotted rear diff housing on a 2018 GM product.

Its the enormous amount of salt they dump. And they probably never wash it.
It's the never washing part that's the biggest problem. I live in one of the highest salt using states in the country. I've owned several of the supposed frame rotting Toyota trucks over the years for 15 + years and close to 200,000 miles and never had any issues with rust. Of course I washed them on a regular bases including the underside.
 
It's the never washing part that's the biggest problem. I live in one of the highest salt using states in the country. I've owned several of the supposed frame rotting Toyota trucks over the years for 15 + years and close to 200,000 miles and never had any issues with rust. Of course I washed them on a regular bases including the underside.

Same here. I've seen every make and model of vehicle rust/corrode to oblivion, if sufficiently neglected in this highly corrosive winter environment..
 
IMHO, Eric O is the best wrench on YouTube. Thanks for sharing. That was a very simple repair. Rear carriers like that are so nice to work on.

He explained the reason that cars rot out in NY. They use salt (calcium chloride) all year long. On all the roads in the winter and on gravel roads (to keep the dust down) in the summer.

I'm glad the owner decided to fix that car. If we are lucky, it might last long enough for Eric to make a few more videos of it.
 
GM did not design it appropriately for conditions.
What conditions should anything automotive be designed for....the worst cast road salt scenario in the country? I wonder how much extra corrosion protection costs new car buyers in the rest of the country where this isn't a problem and don't need it?
That should be outlawed since there are alternatives.
That cost more to the state and local governments to buy. Wonder how much personal property is damaged every year from road salt?
 
What conditions should anything automotive be designed for....the worst cast road salt scenario in the country? I wonder how much extra corrosion protection costs new car buyers in the rest of the country where this isn't a problem and don't need it?

That cost more to the state and local governments to buy. Wonder how much personal property is damaged every year from road salt?
Car makers have recalled vehicles due to salt corrosion issues causing drastic failures over the years. It’s a design consideration.
 
Not only cost effective but actually works. There are several alternatives but they don't work as good and they are more expensive.
I understand salt works, what I am asking is if there is something else that does the job that also does not destroy cars.
 
Since our temps are mostly below -10C in the winter, a mixture of 3%salt and 97% fine gravel is used here.
We get some rust/rot issues, but not nearly what you get out east.

https://www.calgary.ca/roads/conditions/snow-ice-salt.html

1717713737794.webp
 
Guys defending salt because it's cheap while their cars rot to the ground. 😖 Wonder what the cost difference of the next best less corrosive alternative would be vs the money saved by citizens not having to have repairs like the SMA video. It seems like most of SMA's repairs are salt damage related. I lived in NW Pa for 48 years so I know about salt. My daily driver here is a 2002 Wrangler that I can break any fastener free underneath and spin off by hand. Exhausts last forever. I'd gladly pay a little more road tax if my cars didn't disintegrate if I still lived in Pa.
 
I thought when aluminum corroded the film created on top protected the rest of it from further corrosion?

How does it corrode all the way through a heavy housing - in a few years no less? Did they use some sort of fastener that caused Galvanic Corrosion?
A few years? A 2018 could have been built in late 2017, 7 years ago.
 
Here in ILLinois they have gone to mostly a calcium chloride brine. Salt is only used now in heavy snow or drifting area.
 
Guys defending salt because it's cheap while their cars rot to the ground. 😖
I don’t think its “defending” as much as realizing that this is how the state views it. Cheap to buy, effective, and you don’t have to sweep up sand in the spring.

Actually it’s better than that: by making it a “necessity” to replace cars more often, the state can reap money off new car registrations. Spend less and make more? wish my life was only so easy.
 
Here in ILLinois they have gone to mostly a calcium chloride brine. Salt is only used now in heavy snow or drifting area.
The calcium chloride brine is used as a pre-wetter before the snow starts as an attempt to get ahead of snow accumulating. Once the snow starts salt is used. Once the temperature drops below a certain degree plain salt starts losing it's ability to melt snow. The salt then gets treated with liquid calcium chloride so it can start melting snow again. The reason salt is used is because it is the most effective plus lowest cost method to melt snow. There are several alternatives to salt but they don't work as well and cost more money. In my state people demand the streets be clear of snow instantly and don't think about the long term damage done to cars and the environment. To meet that demand government officials dump tons of salt on the road. Me, I'd love it if salt was not used. Since people want snow free roads to drive on salt will continue to be used until a better low cost alternative is available. Or even better, people should learn how to drive on roads that have a little snow on them so salting isn't needed.
 
The calcium chloride brine is used as a pre-wetter before the snow starts as an attempt to get ahead of snow accumulating. Once the snow starts salt is used. Once the temperature drops below a certain degree plain salt starts losing it's ability to melt snow. The salt then gets treated with liquid calcium chloride so it can start melting snow again. The reason salt is used is because it is the most effective plus lowest cost method to melt snow. There are several alternatives to salt but they don't work as well and cost more money. In my state people demand the streets be clear of snow instantly and don't think about the long term damage done to cars and the environment. To meet that demand government officials dump tons of salt on the road. Me, I'd love it if salt was not used. Since people want snow free roads to drive on salt will continue to be used until a better low cost alternative is available. Or even better, people should learn how to drive on roads that have a little snow on them so salting isn't needed.
LOL I've been driving in ILLinois winters for over 50 years. I'd just as soon they didn't treat anything unless it's an ice storm. We barely get snowplows once a day out in the country.
 
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