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No, the density doesn't actually change, though it may seem like it. With a multi-grade oil, the viscosity changes, which basically means that the flow of the oil is either becoming more fluid or more sludge-like. The higher the temperature of the oil, the better it flows. Multi-grade oils, like 5W-30 type, will flow slowly initially, which helps cold weather start ups. Eventually the oil starts flowing more fluidly, when the engine reaches operating temperature.
Long story short: No, the density remains the same. It's the viscosity of the oil that changes.
Wiki User
∙ 14y ago
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∙ 13y agoWiki User
∙ 11y agoYes
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Would you expect to change a liquid's density?
The temperature of the fluid
Why is the temperature important in density gradient centrifugation?
Temperature and density are inversely proportional because increase in temperature increases the volume of a substance and thereby decreasing the density. In density gradient centrifugation, any change in temperature changes the sedimentation of a substance and therefore it may be in aqueous solution rather than pelleted or Vice verse
Does volume density or mass change when water is frozen then heated?
The density of water changes at different temperatures. As temperature goes up, density goes down.
What is specific weight of diesel fuel?
The density of diesel fuel oil (20 to 60) at 15 degress Celsius is 820 to 950 kg/m3. In other words, it has from 82 to 95 percent the density of water, or specific gravity (relative to water) of 0.82 to 0.95.
How do you change the mass or volume of a gas in order to decrease the density?
- modifying the temperature- modifying the pressure- modifying the volume
How do you change the density of any object?
Change the temperature.
What is the only way that the density of a solution can change?
The density depends on temperature.
What is the hydrometer density of diesel fuel reading?
0.84 @20 deg C, but can vary with temperature.
Is temperature the only thing that affects density?
It is the easiest way to affect the volume which would change the density. However, if you increase the pressure but keep temperature constant the volume will also change. Any change in volume affects density.
What would you expect to change a liquid density?
temperature of the fluid.
What will change the density of an object?
Either a decrease or increase in temperature will change the density of an object.
How will the density change if the temperature increased to 125?
The density of most substances will change if temperature is increased. The amount of change depends on the difference between the two temperatures.
Would you expect to change a liquid's density?
The temperature of the fluid
What are the two physical properties that change with temperature?
Density and specific internal energy are two physical properties that change with temperaturea change in temperature.
Diesel or petrol has a higher density?
diesel
Does a substance change density if it changes physically?
Depends on what you consider a physical change. Substances change their density when they change their state of matter. When the temperature rises, substances usually expand, wich leads to the density decreasing. When the temperature falls, substances contract, increasing the density. Exception would be water, as it shows an anomaly occurring near 273K
How can you change the overall density of an object?
In a simple way, since density = mass /volume, the density of an object can be changed by changing either mass or volume of an object .
