With the onset of the first frosts, every responsible motorist thinks about the safety of his vehicle. A sharp decrease in temperature, reagents on the roads and snow drifts create extreme operating conditions for which the machine must be ready in advance. Neglect of seasonal maintenance often leads to costly repairs and downtime at the most inopportune time.
Winter is not just sub-zero temperatures outside the window, it is a complex load on all units and assemblies. Temperature swings negatively affect the elasticity of rubber seals, the viscosity of technical fluids and the capacity of the battery. Ignoring these factors can turn a comfortable trip into hours of waiting for a tow truck.
In this article, we will discuss in detail the algorithm of actions that will allow you to meet the cold season without problems. We will cover the critical steps, from engine oil replacement to bodywork processing, based on the technical recommendations of manufacturers and the experience of service engineers.
Diagnostics and maintenance of the battery
The first and most vulnerable element in winter is the battery pack. Low temperatures drastically reduce the chemical activity of the electrolyte, which leads to a drop in the starting current. If in summer the battery could cope with the start even at 50% charge, in winter this figure becomes critical. Electrolyte density should be checked first, since in a discharged battery the liquid can simply freeze, rupturing the body.
Visual inspection of terminals and contacts is necessary. Oxidation of the terminals creates a high transient resistance, which prevents the transfer of the current required by the starter. Clean the contacts with fine sandpaper to a metallic sheen and treat them with a special lubricant to prevent corrosion. It is also worth checking the reliability of the battery itself so that the vibration does not damage the plates.
⚠️ Attention: Never try to light a car with a completely frozen battery. An internal short circuit of the frozen electrolyte can cause the battery body to explode and acid to splash.
To extend the life of the battery in the winter, it is recommended to use a thermal case or simply put the battery in a warm room if the car is stored outside without a garage. This simple action can save up to 30% of the capacity in the morning.
Checking the cooling system and choosing antifreeze
The engine cooling system is the car’s circulatory system, and failure to do so in winter is tantamount to instant cardiac arrest. The main task is to prevent the coolant from freezing, since the expansion of water during crystallization can break the cylinder block or the heater. Use of the distilled Antifreeze is not allowed in the cold season.
It is important not only to check the level of liquid in the expansion tank, but also to measure its density with the aremeter. Over time, ethylene glycol loses its properties, and additives precipitate, no longer protecting aluminum and copper from corrosion. If the antifreeze has become cloudy, has acquired a rusty hue or flakes are visible in it, the system must be washed and filled with a new composition.
Particular attention should be paid to the condition of the pipes and clamps. Rubber in the cold bluffs and cracks, which can lead to a sudden breakthrough of the highway under pressure. Clutch the tube with your hand - it should be elastic, but not "stone". Cracks on the surface of the hoses are a direct indication for their replacement.
Can antifreezes be mixed in different colors?
Mixing antifreezes of different colors and compositions (G11, G12, G13) is not recommended. Various additive packages can react chemically to form a gel or solid precipitate that clogs the thin channels of the radiator and pump. In an emergency, it is better to add distilled water to the service than to risk mixing incompatible chemicals.
Replacement of technical fluids and filters
Motor oil is a key factor in easy engine start in the cold. When the temperature decreases, the viscosity of the oil increases, and it turns into a thick substance that is difficult for the starter to pump through the system. For winter, you need to use oils with an index. (low temperature properties) denoted by the letter W (Winter) in the SAE marking.
The table below shows the dependence of the minimum engine turning temperature on the viscosity of the oil:
| SAE marking | Min. turning temperature (°C) | Min. pumping temperature (°C) | Recommended climate |
|---|---|---|---|
| 5W-30 | -30 | -35 | Moderate, middle lane |
| 5W-40 | -30 | -35 | Moderate, southern regions |
| 0W-20 | -35 | -40 | Siberia, northern regions |
| 0W-30 | -35 | -40 | Siberia, severe frosts |
Along with oil, it is critical to replace the fuel filter. In diesel engines in winter, there is a risk of paraffin traffic jams, if you do not switch to winter diesel fuel and do not use antigels. Gasoline engines are also sensitive to filtration quality, as the condensate in the tank can freeze in the main line.
Don’t forget to check the level and condition. brake fluid. It is hygroscopic and accumulates moisture from the air. In severe frost, water in the brake system can turn into ice crystals, which will lead to brake failure or wheel locking. If the fluid has been changed for more than 2 years, its replacement is required.
Keep the fuel tank full for at least 2/3 of the winter. This will reduce the risk of condensation on the walls of the tank and prevent the fuel line from freezing.
Tires and wheelbase: safety on a slippery road
The transition to winter tires is not just a recommendation, but a necessity dictated by physics. Summer tires at temperatures below +7 ° C lose elasticity and turn into "plastic", completely losing traction with the road. Winter tires made of a special mixture that remains soft even in severe frost, providing the necessary contact with the coating.
When choosing a set, it is necessary to take into account the operating conditions. The studded rubber is indispensable for driving on rolled snow and ice, providing better braking. Velcro (friction rubber) is preferred for cleaned city roads, as it is quieter and more comfortable, and more efficiently removes water and snow porridge from the contact spot.
Be sure to check the tire pressure. In the cold, the air is compressed and the pressure drops. Unproven tires wear faster at the edges of the tread and increase fuel consumption. However, pumping them “in the cold” is also not worth it – it is better to bring the pressure to normal in a warm garage or after a short trip.
- ❄️ Check the residual height of the tread: for winter it should be at least 4 mm, otherwise the tire will not be able to effectively divert snow slime.
- ❄️ Examine the sidewalls for the presence of hernias and cuts, which in the cold can quickly increase in size.
- ❄️ Don’t forget to check the condition of the spare wheel or the presence of a remix, as winter roads are rich in sharp obstacles hidden under the snow.
Body and reagent protection
The winter road is an aggressive chemical environment. A mixture of salt, sand and reagents creates an abrasive porridge on the car body, which is able to destroy the paint coating and cause corrosion of the metal in one season. Anti-corrosion treatment Hidden cavities and bottoms are the best investment in the durability of the body.
Before the onset of cold weather, it is recommended to wash the car thoroughly, paying special attention to the arches and bottom. After washing, be sure to apply a protective wax layer or polyrene. This will create a hydrophobic film that will repel dirt and water, facilitating subsequent washings.
⚠️ Attention: Do not use hot water to defrost glass or locks. A sharp temperature drop can lead to cracks in the windshield or damage to door seals.
Door seals also require maintenance. Lubricate them with silicone lubricant so that they do not freeze to the body after washing or snowfall. Dry rubber bands in the cold sank and can break when trying to open the door.
☑️ Checklist for body preparation
Lighting and visibility
In winter, daylight is short and visibility is often limited by snowfall or fog. The safety of lighting devices becomes a matter of life safety. Check the operation of all lamps: passing and driving beams, fog lamps, dimensions and turn signals. Even one burnt out headlight drastically reduces your visibility to other participants in the movement.
Pay special attention to the adjustment of the light beam. A loaded trunk or passengers in the back seat can lower the rear of the car, which will cause the headlights to blind oncoming drivers, and the road in front will remain in darkness. Use the headlight corrector for the angle of inclination.
The windshield wipers (dryers) should be in perfect condition. Winter brushes differ from summer closed frame, which prevents stuffing of snow and freezing mechanism. The rubber bands must be soft and clean. Don't forget to pour it, too. freeze-free with crystallization temperature below the expected frost in your area.
Poorly working wiper or dim headlights in winter increase the risk of accidents several times. Don’t waste money on these systems.
FAQ: Frequently Asked Questions
Do I need to warm up a modern car before traveling?
Modern engines with injection system do not require long warming up at idle speeds. It is enough to give the engine to work for 1-2 minutes to stabilize the speed and warm up the oil, after which you can start moving in a gentle mode. Prolonged warming up on the spot is harmful to the engine and the environment.
Can I use summer tires if it snows, but I'm not in a hurry?
It is strictly not recommended to go on summer tires even with a small snow cover. The braking distance on summer tires in snow increases 5-7 times compared to winter tires. The risk of getting into an accident or getting stuck in a snowdrift, blocking the passage of special equipment, is too great.
How often should I wash my car in winter?
In a city with active use of reagents, it is advisable to wash the car every 1-2 weeks. The main goal is to wash the salt solution from the bottom and arches. It is best to use washers with the function of cleaning the bottom under high pressure.
What to do if the door or lock is frozen?
To defrost locks, use special defrosting agents or alcohol. Don't pour boiling water! If the doors are frozen, carefully pull the handle at different points of the perimeter, having previously knocked on the seal. Use silicone lubricant for prevention.