Checking for salt damage

[dagosa]

The worse rust on all cars occurs when salt water is washed on the car from above and enters the body cavities and collects on inside welds around the bottom of the car body shell. . It can never be washed away sufficiency on the inside and will stay there all year round, rusting. Exposed areas with obvious salt stain can be rinsed off with a low pressure garden hose. High pressure washers actually drive salt water back up into the body cavities through drain holes and through seals. Because drain holes are surrounded by welds which burn off protective coatings, salt brine and water collects there and these are the first areas that rust. Washing from the outside does little for where the worse rust occurs. I know looking at the undercarriage and wheel wells and washing these areas sounds like you are covering all the bases…but we are not. It’s only a part of the rust story, a relatively small part…