Have you considered a 'manual override' on the fan? Can be handy at times. Turn it on before the oil gets hot enough to trigger the automatic switch.
If the automatic switch is faulty, you wouldn't know it until your oil is so hot it has the consistency of gasoline.
Just an idea . . .
Both my '99 450's have the manual override.
If the automatic switch is faulty, you wouldn't know it until your oil is so hot it has the consistency of gasoline.
Just an idea . . .
Both my '99 450's have the manual override.