Fall is officially here and that means colder weather is right around the corner.

Before the first freeze hits, take time to get your machines ready. Cold temps thicken fluids, drain batteries, and make every start tougher. A few smart steps now can keep your equipment running efficiently all winter, and save you from costly downtime later.

1. Check Fluids, Fuel, and DEF

Coolant & oil: Make sure your coolant protects to your region’s lowest temps, and switch to manufacturer-recommended winter-grade oil for easier starts.

Fuel: Use winter-blend diesel or add an anti-gel treatment before temperatures reach the cloud point. Keep tanks full to prevent condensation and carry an extra winter fuel filter if possible.

DEF: Diesel Exhaust Fluid freezes at about 12°F (-11°C), but freezing won’t damage it. Let the system warm up before operation and address any DEF fault codes promptly. If a machine will sit for an extended period, follow the OEM’s storage procedure — leave expansion room, keep DEF out of direct sunlight, and if you choose to drain it, flush with distilled water or fresh DEF before refilling in spring.

2. Warm It Up Before You Work

Cold starts stress engines and hydraulics. Let machines idle a few minutes so oil and fluids can circulate, then begin light work before moving to full load.
In extreme cold, use a block heater, air heater, or auto-start system to maintain temperature. Avoid long, low-RPM idling — it can cause fuel wash and unnecessary engine wear.

3. Use Cold-Weather Lubricants

Thick fluids mean sluggish performance. Switch to low-viscosity hydraulic oil and winter-grade grease so everything flows smoothly and responds properly in low temperatures.

4. Keep Batteries and Electrical Systems Healthy

Cold weather drains batteries fast. Test voltage, clean terminals, and inspect cables for corrosion or cracks. Replace weak batteries before the first freeze, and verify your alternator is charging correctly.

5. Clean and Inspect Daily

Frozen mud and debris can act like concrete. At the end of each shift, clean tracks, undercarriages, and joints. Check hoses, seals, and tires for cracks or low pressure to prevent costly damage when temperatures drop.

6. Prevent Corrosion and Store Smart

If indoor storage isn’t an option, use covers and apply a protective spray to exposed metal or cylinder rods to prevent rust and pitting. Fill tanks before storage to minimize condensation, and keep batteries on a trickle charger when equipment is idle for long periods.

7. Stay Safe on the Jobsite

Shorter days mean darker sites. Check that all lights, wipers, and backup alarms work properly. Keep steps and handholds clear of ice, and make sure operators have proper visibility gear.

The Bottom Line

Winter doesn’t have to slow you down. A little preparation now means your machines will start easier, run smoother, and last longer — no matter how cold it gets.

👉 Need help winterizing your fleet? Contact your nearest Kirby-Smith Machinery branch for service support and cold-weather prep.

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