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Hey Dennis: Yes, there is an oil cooler that was offered on early
Continentals, and there are probably a few of them around. It mounts on the LH
side of the engine case, if you have an oil filter installed, it goes on the
case where the filter is located. Continental determined years ago that the oil
cooler was not required.
I think if you check everything carefully, you will
find a problem or two with the cowling and/or the engine is getting tired (need
a top overhaul?). The baffles must create a seal between the upper and lower
portion of the engine. In addition, the cowling must have enough opening at the
rear to let out the air. I have seen top cowling that did not seal. I have seen
lower cowling that also did not seal (when you let too much air in the bottom,
it lowers the pressure differential between the upper and lower portions of the
engine). And I have seen cowling that did not have enough opening in the rear.
Also, if the clearances are getting too large between the rings and cylinders,
you get more blow-by which heats up the oil.
100 to 115 degrees over the OAT is normal. At 215
degrees of oil temperature, you are not hurting the engine. So most likely
you can just keep on doing what you have been doing.
Lynn
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