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Reply to "Rounded Fan Hole"

@Gotno356 posted:

Mike,

did you see any difference in oil temp after that mod? Up or down?

Tom.

I ran with both an internal cooler and an external cooler/oil thermostat/thermostat controlled fan for a year before switching to using only the external cooling system. No oil temperature differences were detected.

The external oil thermostat recirculates the oil back to the engine if the oil temp is less than 180F. The fan is set to turn on when oil in the cooler is above 180F. This helps to bring the engine temp up to running temp when doing a cold start.

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