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Oil Temps

Glen Powell wrote something to the effect of...

You want you oil to be at the minimum above boiling of water to rid the system
of moisture...

A few points here:  If the moisture were to be "gotten rid of", where would it
go?  Aren't the oil systems closed.  Suppose then it stays in the system as
steam.  Steam is worse than water for corrosion, aggressive tendencies, etc.
And a final point:  The boiling point of water is 212 F or 100 C at standard
pressure  (1 bar).  My engine oil (system) is only at 1 bar when the motor is
off.

I look at the temperature of oil in a performance oriented fashion:  I want it
warm enough so that it flows, but not so warm that it breaks down quickly or
loses its lubrication properties.  I also keep an eye on the oil pressure.  If
it tops out at 5 bar under acceleration, stays somewhere between 3 and 4.5 ish
when driving and stays above 2 ish when idling (after warm up) then I feel the
viscosity is about right.

I have seen the temp move above the 130 C tick on my car, but that was during a
driving course:  lots of revs, little airflow.  On the Autobahn, even after 130
mph for two hours or so (it was late on a Sunday -- roads were clear) the oil
temp wasn't very high -- maybe 110 ish.  Normally around 100 plus/minus.
(around/above the tick between 60 and 130.

Oil type:  Mobil 1 15W50 summer  10W30 winter

Joe Yakubik
'91 200 tqw (with about seventeen radiators, oil coolers, intake vents, etc. up
front)