Stop Salt Corrosion: Keep Your Undercarriage Clean

Every winter, de-icing crews spread salt and brine across Washington's passes and highways. It keeps roads safe — and quietly attacks every vehicle that drives on them.

How salt damages your fleet

Road salt oxidizes metals. It eats away paint and finish, damages galvanized steel, and can corrode electrical wiring — often in places no one looks until something fails.

How often to wash the undercarriage

Experts recommend cleaning the undercarriage at least once a month, especially during and after winter, to remove salt buildup before it does lasting damage.

• Trucks that run Snoqualmie or Stevens Pass in winter
• Vehicles parked outdoors in wet weather
• Trailers and equipment with exposed frames and wiring

Fleetwash crews wash on site, so a monthly undercarriage wash doesn't cost you a single hour of drive time.