How the oil viscosity changes with the temperature
The viscosity is the level of fluidity. High viscosity means the oil is very fluid, small means the opposite. The factors affecting the viscosity are the engine temperature, the minerals in its composition and also the refinement.
The best temperature for the oil is from 0 to 200 degrees Fahrenheit. So the rating is done depending on these temperatures. Outside these numbers the oil either burns or freezes and the engine hurts from the friction of the pieces and big heat inside.
At very high temperatures the oil becomes extremely fluid and the minerals inside it are being destroyed. Of course when the temperature limit is touched, the oil burns. The result is the damage produced to the engine because of low lubricant.
On the other hand when exposed to cold temperatures the oil is no longer fluid and transforms into a gel. Usually a 32 degree Fahrenheit temperature is the limit but some oils have special properties and resist down to -5 degrees.
The oil function depends on the environment. If the weather is cold, is better the oil to be more viscous. This way the engine is protected especially when starting the engine. When the oil is more fluid it protects more the engine from heat, and not lose its minerals. This way the engine parts remain intact and don’t suffer from friction or other factors.
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