Winter prep is mostly inspection and topping off, not a repair job. These steps apply to most cars and light trucks. Your owner’s manual has the fluid specs, tire pressures and any model-specific cold-weather notes.
Battery and electrical
- Test the battery and clean corrosion off the terminals. Cold weather reduces cranking power.
- Check the belts and cables for cracks and fraying.
- Confirm headlights, brake lights, hazards and fog lights all work.
Tires and visibility
- Check tread depth and tire pressure on cold tires, including the spare. Pressure drops as the temperature drops.
- Consider winter or all-weather tires if you drive in regular snow or ice; follow the tire and vehicle manuals for fitment and pressures.
- Replace streaking wiper blades and fill washer fluid rated for freezing temperatures.
- Clear the whole vehicle of snow before driving, including lights and the roof.
Fluids
- Engine oil: confirm the viscosity your manual lists for the temperatures you’ll see. See motor oil viscosity explained.
- Coolant: test freeze protection and top up with the correct type. See coolant basics.
- Brake fluid and washer fluid: check levels; use winter-rated washer fluid.
- Diesel fuel: if you drive a diesel, plan for gelling and filter icing. See the dedicated diesel winter fuel guide.
Emergency kit
Keep a small kit in the cabin: ice scraper, brush, blanket, gloves, flashlight, phone charger, jumper cables or a jump pack, a bag of abrasive for traction, and snacks. In remote areas, add water and a shovel. Tell someone your route when weather is bad.
Driving habits that help
- Clear all snow and ice before you move the vehicle so it doesn’t blow onto cars behind you.
- Give yourself more following distance; cold tires and cold brakes need longer to work.
- If you start to skid, ease off the throttle and steer gently in the direction you want the front of the vehicle to go, per your manual’s guidance for your brake system.
- Keep the fuel tank at least half full in deep cold so there is less room for moist air to condense in the tank.
For equipment that sits until spring, use the equipment care guides. For oil change timing once winter miles add up, use the oil change interval tracker.
Frequently asked questions
When should I winterize my car?
Before the first hard freeze is ideal, so you are not troubleshooting a dead battery or frozen washer fluid on a cold morning.
Do I need a different oil viscosity in winter?
Only if your owner’s manual lists alternate grades by temperature. Many modern manuals specify one multi-grade year-round. Follow the manual.
What washer fluid should I use?
Use a fluid rated for temperatures below what you expect overnight. Summer fluid can freeze in the lines and reservoir.
AMSOIL products often involved in winter prep
- Motor oil: use the grade in your manual and confirm with the vehicle lookup. For what the numbers mean, see motor oil viscosity explained.
- Coolant: AMSOIL Heavy-Duty Antifreeze & Coolant is a 50/50 pre-mix AMSOIL describes as fully formulated without supplemental additives. Confirm the spec your vehicle requires; more in coolant basics.
- Diesel fuel additives: covered with verified AMSOIL claims on the diesel winter fuel page.
Product details are on each linked page and on amsoil.com. Start with AMSOIL’s official lookup guide.