Quote:
Originally Posted by MetroMPG
Correct me if I'm wrong, but "heat rises" only applies to the liquids in the equation, not the solids.
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I believe that is more or less true. In this case, the pad's heat will rise through the oil, so it will be uniformly heated. Some heat will also be conducted through any metal that is touching the oil pan or oil. Metal conducts in any direction, but in this case it would be "up" anyway. Plus air "is also a liquid", so some (not much) will rise and transmit heat from the oil's surface to the crank and pistons.
I doubt that a pad heater will get the engine red hot, but over 4-6 hours the lower parts of it will acquire some warmth. And when it starts turning, the warm oil will wash over everything and the temperatures will even out. Having an
electric oil pump would help distribute heat while the pad is still working.
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is
where you're going, not
how fast.
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[Old] Piwoslaw's Peugeot 307sw modding thread