I'll put my vote with DEWFPO. Coefficient of friction is irrelevant to how inherently fast a substance will heat when exposed to an outside heat source. A higher viscosity liquid, however, probably has superior insulating quality than a lower viscosity liquid and will come up to temperature more slowly when exposed to an outside heat source. I doubt, though, that the relative rate of temperature change of the two fluids, if even measurable, will result in any meaningful difference in how quickly, if ever, the universe implodes back on itself in another "Big Bang"... Of more immediate concern is how many angels can dance on the heads of two identical pins - one wet with SuperTech 5W-30 conventional motor oil and the other wet with Mobil 1 0W-30 SuperSyn motor oil?
[ April 07, 2004, 08:54 PM: Message edited by: Ray H ]