What happens to oil in the cold winter weather?
Photo Credit: Oregon Department of Transportation
Several things happen to oil when the temperature outside drops. Its physical properties change due to the decrease in the temperature, which overall impacts its performance. These performance issues may include startup problems and increased wear on parts.
Here is what happens to motor oil when it gets cold:
Thicker Consistency: When oil becomes thicker, it flows more slowly in cold weather. This can make it difficult for the oil to circulate through the engine properly, especially during startup.
Reduced Lubrication: An increased wear on parts may occur when they are not adequately lubricated by the oil, as it cannot reach all engine components.
Start-up Difficulty: Oil that is cold and thick increases the resistance in the engine, which makes it harder for the starter motor to turn the engine over. Longer crank times may happen.
Oil Pump Strain: The oil pump may have to work harder to push the thicker oil through the engine, which will increase wear on the pump.
Slower Warm-up: The oil may take longer to thin out enough for proper lubrication, thus causing the engine to take longer to reach its optimal operating temperature.
How to Reduce the Effects of Cold Oil
Use the Correct Oil: Oils with a lower cold-temperature viscosity as specified in your owner’s manual is the best thing to do.
Synthetic Oil: Synthetics perform better in cold weather, maintaining better flow and protection than conventional oils.
Warm-up Vehicle: Let your Mercedes-Benz warm up briefly before driving in extreme cold.
Keep your engine protected and performing its best in cold temperatures by having your local Mercedes-Benz repair specialist perform an oil change.