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How Does Temperature Affect Viscosity of an engine oil?

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Question added by Ibrahim Saleh Ibrahim , MEP Project Manager , MTA & Verger Delporte Electromechanical LTD
Date Posted: 2014/10/28
magdy abd al nour
by magdy abd al nour , HVAC Site manger , First United Co.

high temp equal low viscosity, in hot area more viscose oil needed

Souren Hekimian
by Souren Hekimian , G.M , T.P.C. Hydraulics & Engineering

temperature is inversely proportional to viscocity ,which means that when the temperature of lubricant or oil rise the viscocity will decrease . so the lubricants and oil viscosity specified at special degree of temperature .

atif Panhwar
by atif Panhwar , Deputy Director, Hydro Development , WAPDA

Simply, temperature and viscosity are inversely proportional. When the one increases the other decreases and vice versa. This is mainly due to the molecular motion of the liquids which varies with the temperature variation and varies the inter molecular forces. 

M Khawer Riaz
by M Khawer Riaz , Electrical & Instrumentation Jobs , Unilever Pakistan Limited

when temprature increase the engine oil is getting hot then motion of  moecules  increases.which causes

the low viscosity. 

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