Just about oil viscosity ?

im doin science coursework at school and i have to explain why oil flows faster at higher temperatures


any help?Just about oil viscosity ?
mineral oils have different viscosity at different temperatures, this is called the ';viscosity index';, and it says, the hotter the oil, the ';thinner'; it gets,


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the thinner the oil the more it tends to flow. so much so that the oil companys tend at add VI additives to keep the viscosity down when it does get hot (because the thin oil can not take load, = force over area). The perfect oil would keep the same viscosity and be able to handle the same load, at any temperature.