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Old 02-07-2013, 11:16 AM   #46
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Quote:
Originally Posted by BlueFocusSE5 View Post
Most modern vehicles have a cooling system that runs at 190 deg. F.+ and the engine temperatures are far greater than 212 deg. F., especially on the cylinder walls.
Oil temps measured at the sump over 260 are common place for track day participants. Spot temps will be higher. Viscosity measurement procedures that end at 212 aren't too useful.
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