Corrosion arrives by a different route
Northern cars rot from the underside upward, because brine sprayed onto a road is thrown into every cavity by the wheels and sits there through the winter.
Florida cars corrode from the outside in. Salt-laden air carries fine aerosol inland for miles, and it settles on everything: brake caliper hardware, wheel fasteners, electrical connectors, aluminium castings, and any bare steel that has lost its coating.
The practical differences are worth spelling out.
- It is slower, and it does not usually threaten structure. Rocker panels and subframes are rarely the problem here.
- It attacks aluminium and connectors more than steel. Galvanic corrosion where aluminium meets steel is common — a seized aluminium wheel on a steel hub is a Florida job.
- It is worse where the car sits. A vehicle parked outdoors near the water accumulates more than one that is garaged three streets further in.
- Washing genuinely helps, including the underside, which is the opposite of the advice that matters in the salt belt where the problem is what is already trapped inside.
The air conditioning never gets a rest
There is no off-season. A compressor here runs on a duty cycle that a system in a temperate climate reaches for perhaps three months.
That shortens the life of everything in the circuit, and it makes two habits worth adopting. Have the system checked before it fails, in spring, when a shop can book the work rather than fit it in. And treat the cabin filter as a consumable on a real interval, because humidity plus a dark damp box is how an evaporator grows the smell that eventually needs the dash out to fix.
Electric and hybrid vehicles are increasingly common here and their compressors are electric, which changes the oil. POE, not PAG. PAG oil conducts, the circuit passes over high-voltage windings, and the wrong oil ends as an isolation fault and a replacement compressor.
No freeze cycle, and what that means
A freeze-thaw cycle is what turns a small crack into a large one, breaks up road surfaces, and destroys anything with water in it. Florida does not have one.
So the roads are better than the northern equivalent and the potholes are fewer, which is genuinely good news for suspension and wheels. Coolant here is a corrosion inhibitor rather than antifreeze, and a system topped up with plain water will not burst — it will just quietly corrode from the inside, which is worse because nothing announces it.
Standing water is the local hazard
An afternoon storm can put several inches across a road in minutes, and a routine commute here includes driving through water that would be a notable event elsewhere.
What that does:
- Wheel bearings. A hot hub plunged into water pulls a small amount past the seal as it cools. It is not dramatic once; done weekly for years it is why bearings fail earlier here.
- Brakes. Rotors cool unevenly, and repeated wet-then-hot cycling accelerates the corrosion between the hat and the hub that shows up as a pulsation.
- Connectors and grounds low in the vehicle. ABS sensors, ride height sensors, parking sensors and anything else mounted near the bottom of a wheel arch.
- Air intake. Water past the filter is an engine on the back of a truck, and it happens every year to somebody who followed the vehicle in front.
Sun, and the parts it destroys quietly
Ultraviolet exposure here is relentless, and it works on materials rather than metal. Wiper blades measured in months rather than years. Headlight lenses hazing until the beam pattern is genuinely worse — an inspection nobody performs and a safety issue that arrives gradually. Rubber bushings that harden and crack instead of wearing. Plastic cooling components that go brittle and then let go all at once.
A car here ages in a way that does not look like ageing. Nothing rusts through, so the vehicle looks sound, and meanwhile every rubber and plastic component has quietly reached the end of its service life at once.
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