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Thread: Engine Warmup
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Old 01-26-2013, 05:38 PM
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raleedy raleedy is offline
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Join Date: Sep 2007
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Mein Auto: 2016 228i 6-speed
Not only does the oil have more thermal inertia than the coolant, it lives in a cooler part of the engine -- the block and the sump -- for the most part, and not up where the fires are. Added to that is that the lower limit of the oil temp gauge is at 160 Fahrenheit. That's hot enough to produce third-degree burns, before the needle even moves off the peg. By that time, the coolant has long since reached normal operating temp.
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