"312 Truck has been a reliable partner for our vehicle maintenance centers in the Midwest. Their team has helped with everything from Promaster vans to full-size trailers. One of the key reasons we continue to trust them is their excellent communication—keeping us informed throughout."
Winter Alert: Protect Your Fleet from Salt Damage

Team #312Truck
Salt buildup is the #1 cause of winter truck damage. Here’s how South Side fleets can stay protected and avoid expensive downtime.
Chicago winters are tough on commercial vehicles, especially fleets that run daily routes across the South Side. As soon as temperatures drop and the salt trucks come out, your fleet is exposed to one of the most damaging elements on the road: corrosive salt buildup. At 312 Truck Body Repair & Painting, we see the long-term effects of winter salt damage every year, and the good news is, most of it is preventable with the right care and maintenance.
How Salt Damages Your Fleet
Road salt works by lowering the freezing point of water, helping melt ice and snow. But that same chemical reaction triggers rust and corrosion on trucks, especially on box trucks, semis, cargo vans, and work vehicles that spend hours on salted roads. Salt collects on:
- Wheel wells and lower body panels
- Frames and undercarriages
- Brake lines
- Fenders, bumpers, and metal surfaces
- Door seams and entry steps
Once corrosion starts, it spreads quickly. Over time, salt damage weakens structural components, eats through paint, and can lead to expensive body and frame repairs, making winter maintenance more than a cosmetic concern. It’s essential for fleet safety and longevity.
Signs Your Trucks Are Suffering Salt Damage
Catching salt damage early saves money and prevents downtime. Look for:
- Surface rust or bubbling paint
- White salt residue on metal parts
- Flaking or peeling coatings
- Corroded bolts or brackets
- Rust visible under the vehicle
- Door edges that look swollen or rough
If you notice any of these, it’s time to take action.
How to Protect Your Fleet This Winter
At 312 Truck Body Repair & Painting, we recommend a proactive winter protection routine that keeps trucks working and avoids costly mid-season repairs.
1. Schedule Regular Washes
Frequent rinsing – especially undercarriage cleaning, is one of the most effective ways to remove salt before it starts corroding metal. Vans, semis, and heavy-duty work trucks should be washed weekly or more during active salt periods.
2. Apply a Protective Undercoating
A high-quality underbody coating acts like armor against salt, moisture, and debris. Applying protective coatings before heavy winter weather hits greatly reduces corrosion on frames, brake lines, and suspension components.
3. Repair Paint Damage Immediately
Salt accelerates rust wherever the paint is cracked or chipped. Our shop provides fast paint touch-ups, refinishing, and rust repair that prevents small issues from turning into expensive structural repairs.
4. Inspect High-Risk Areas Throughout the Season
Regular fleet inspections help identify early rust spots, especially on vehicles constantly exposed to wet, salty roads. Addressing corrosion early saves thousands in potential repairs.
5. Winter Prep for New Fleet Vehicles
Even brand-new trucks need protection. Adding undercoating and sealants to new vehicles helps preserve long-term value and keeps your fleet looking professional year-round.


Why South Side Fleets Trust 312 Truck Body Repair & Painting
Fleet managers choose us because we specialize in heavy-duty and commercial truck body care. Our team understands how Chicago winters impact work trucks and what it takes to prevent and repair cold-weather corrosion. We offer:
- Professional rust repair
- Body panel restoration
- Paint refinishing and color matching
- Undercoating and winter protection packages
- Fast turnaround for fleets
- Convenient South Side location
- Experienced technicians who work on box trucks, utility trucks, semis, sprinter vans, and more
Whether you run delivery vehicles, service trucks, construction fleets, or transport vehicles, we keep your equipment looking sharp and performing safely through the toughest winter months.
Protect Your Fleet Before Salt Damage Sets In
Winter rust doesn’t wait, so neither should you. Keep your fleet protected, reliable, and ready for the road with help from 312 Truck Body Repair & Painting.






