Couple things from a northerner by the sea.
1. Most cars seem to rust less than trucks, for good reason. People with trucks usually have a car also. The truck always goes out in the salt and slush. The key is to flush everything out ASAP after snow stops. simply driving in moderate rain will be enough. My vehicles have been able to survive over 20y, and it is the rockers, cab corners and fender wheel well area that go first.
Some guys stop using their trucks when the weather warms, they don't get the "driving in the rain" flushing that year-round trucks get, and they completely fall apart in 10y. I make a point to take a drive down the highway in early spring when a heavy rain comes through. When I do the spring wash I flush out the undercarriage and frame.
My '23 F150 has an alum body, I'm nervous, not sure what to expect. I think the steel frame will be ok.
2. Sometimes trucks are pulling large boats on a shallow boat ramp and need to back in until the bumper hits the seawater...... We see these trucks all the time, can't miss them!
During severe storms we can get very high tides along with high waves and wind. Anyone living within 1/4mi of the coast is getting salt spray. And there are some areas, I know one in Cape Cod where a very high tide will flood access roads and people drive through foot deep seawater to get to their beach house. You don't want to buy their off-lease MB!
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