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Message: <blockquote data-quote="t2ribena" data-source="post: 375909" data-attributes="member: 3847">bro...all engine does not run at the same temp...depending how it is tuned (lean or rich) which effect how hot the engine runs and the coefficient of the cooling system... for example...if the engine at its combustion chamber temp is about 260C, if the cooling system is design to cools at a factor of 2.8 then we could say the resultant temp around 93C and other car which has the chamber temp about 200C with a cooling factor of 2.15 then the resultant temp is also 93C...this is just an example of heat source and cooling factor relation... engine does not run at same temp but it also depends on the cooling system designed for the engines...too low temp, the fuel is not combusted perfectly, too high then u run a risk of overheating and also condition where the fuel burns just as it enters the combustion chamber...so the temp must be high enuf but then u have headache of cooling and engine oil spec/consumption etc...:top:</blockquote>