Scenario: a truck carries a brine tank and spray bar and the plow hardware rusts faster than before, or so the crew believes. Direct answer: brine wets the truck, the plow and the fasteners, so corrosion control becomes a routine: rinse, drain, inspect and re-treat on a schedule you set from your own records. I give no corrosion rate and make no claim about how much faster any metal corrodes.
Where brine reaches
Brine reaches more places than the spray bar, and the places it reaches are where the corrosion starts.
- Spray bar and nozzles, with drips onto the bumper and plow frame.
- The moldboard, edge bolts, nuts and washers.
- Hydraulic fittings, hose ends and electrical connectors.
- Pivot pins, springs and trip parts.
Routine
| When | What | Why |
|---|---|---|
| After each shift | Rinse the truck and plow with clean water, paying attention to the bolts and fittings; let it drain | Reduces salt left on metal |
| Weekly in season | Inspect edge bolts, nuts and pins for rust trails, stretch or seizing; grease pivots | Finds problems before they seize |
| At each edge change | Replace corroded hardware; clean the mounting face; apply the lubricant or anti-seize the maker permits | Allows removal next time |
| Season end | Deep clean, touch up coating, drain and rinse the brine system | Prevents storage corrosion |
Cautions
Brine changes both the corrosion rate and the friction of every fastener it reaches.
- Anti-seize and lubricants can change the torque needed to reach the required clamp load; follow the plow maker’s instructions.
- Dissimilar metals in contact may corrode faster when wet; check your hardware choices and keep contact points protected.
- Do not use high pressure on bearings or electrical connectors.
Record sheet
| Date | Truck | Rinsed? | Hardware condition | Parts replaced |
|---|---|---|---|---|
How to judge your own corrosion
Count the number of seized or corroded fasteners per edge change by truck, with and without brine, and compare over a season. That gives you your own figure.
Why a control truck helps
If you cannot tell whether brine is the cause of seized bolts, compare two similar trucks, one that carries brine and one that does not, over the same season. Count seized or corroded fasteners at each edge change and note the washing routine on each. A small difference may be noise, and a large one is worth acting on. This costs only record-keeping and replaces opinion with your own evidence.
Limits
I cite no corrosion rate and no study. Follow the manufacturer’s instructions for your equipment.
Boundary: No corrosion rate or study is cited; follow the manufacturer’s instructions for lubricants, torque and washing equipment.
Further reading on this site.
How to Choose a Plow Truck and Blade Package Without Buying Twice ↗Hardware Corrosion and Seizing on Plow Blades: Prevention Practice ↗Carbide snow plow blades ↗Ice Building Up on the Moldboard: Causes and Practical Fixes ↗Pavement Temperature Notes for Crews: A Simple Recording Card ↗Storm Debrief Template: Pavement, Treatment, Plow Passes and Edge Condition in One Page ↗
