Oil Temp is a function of several things ...
Baffling integrity or the use of a plenum are just as important in oil temperature as the oil cooler. That's why the responses to the initial question vary from "too much cooling" to "insufficient cooling", even on the same model with the same engine. I have a Sam James plenum with the standard Vans oil cooler (Niagara?) and so far it appears my oil temps are too cool. I never see anything above 172F in OA temps of 65F and below.
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Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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