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To Fritz Erhald:

On the subject, I was forced to fly for about 45 minutes sans oil cooler due
to an in-flight failure of the one on my 235 (the FBO at the airport where I
made an emergency landing and I rigged up a by-pass for the leaking cooler
so I could get home). This was in the cooler part of the year in southern
California over the desert and I never saw overly high oil temperatures
during the flight.

I have, however, a very efficient custom baffling set-up (and I don't mean I
can't figure it out!) and never see CHT's over about 290 degrees F - so I'm
not dumping too much heat into the oil in the first place.

Regardless, if you operate at an airport where you may be number 10 for
take-off, such as often seen at some busy So. Calif. airports, on a very
warm day, you will see excessive oil temperatures - even with a cooler. IMHO
you should bite the bullet and put one in.

Dan Schaefer

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