As winter sets in, most drivers focus on the obvious dangers—snow, ice, and reduced visibility. And for good reason; these conditions can make driving extremely risky. Sticking to traffic rules and being cautious can often mean the difference between a safe commute and a serious accident.
But there's another hidden danger that many overlook: rock salt. While it helps keep roads safer by melting ice, it also works against your car. Over time, this same substance can cause severe damage to your vehicle’s undercarriage, leading to costly repairs come spring.
How Salt Affects Your Car
Most cities use a mixture of salt and sand on their roads during the winter to prevent ice from forming and to improve traction. The salt lowers the freezing point of water, helping melt existing ice and stopping new layers from forming. The sand adds grip, making it easier for vehicles to move safely over icy surfaces.
However, when you drive right after the salt trucks have passed, the salt gets kicked up and sticks to your car’s undercarriage. This area is often ignored because it's hard to see and not easily accessible. In regions like the Northeast, where heavy snow and repeated storms are common, this exposure becomes a regular issue.
Over time, salt can cause:
- Rust formation – The undercarriage isn't painted or sealed like the rest of the body, so metal parts are more vulnerable to rust.
- Scratches and wear – Rock salt has sharp edges that can scratch metal surfaces, creating tiny pits that accelerate corrosion.
- Deterioration of key components – Parts like the exhaust system, suspension, brake lines, and muffler are especially at risk from salt exposure.
What You Can Do to Protect Your Car
You don’t have to let salt destroy your car. With some proactive steps, you can protect your vehicle and avoid expensive repairs later. Here are a few things you can do:
- Apply wax – Give your entire car, including the undercarriage, a thick layer of wax to create a protective barrier against moisture and salt.
- Use a pretreatment solution – An oil-based product applied to exposed metal parts can help repel salt and prevent it from sticking directly to the metal.
- Keep up with washes – Regularly washing your car, especially the undercarriage, helps remove built-up salt and prevents long-term damage.
- Schedule a pre-winter inspection – Get your car checked before the season starts to catch any weak or worn-out parts early.
If you're looking for professional help with detailing, inspections, or repairs, schedule an appointment with DaSilva’s Auto Body today. We specialize in keeping your car in top shape all year round. Call us now to learn more about our services and how we can help protect your investment.
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