Thread: Optimum temps?
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      01-12-2013, 10:42 AM   #10
maupineda
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Drives: E87 130i
Join Date: Jul 2012
Location: Mexico City

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All oils advertised high temp viscosity is at 100C, anywhere form there on and the oil becomes thinner, if the oil could be kept at 100C all the time to me that wold be ideal but if you have the oil at 90C for normal driving and then when thrashing the car it goes to the nominal 100C that would be perfect. You should be able to ask full performance to the engine from 70-75C without doing any harm as the oil in this range is a bit thicker and will take the abuse. With today's oils the advanced additive package do a good job to maintain protection beyond optimal fluid temps. The cooler to me is a good idea, I actually don't like my oil going past 120, which by the way is still within very acceptable ranges.